{"id":595,"date":"2024-06-19T08:55:25","date_gmt":"2024-06-19T05:55:25","guid":{"rendered":"https:\/\/sisu.ut.ee\/measurement\/self-test-4-2\/"},"modified":"2024-06-19T08:55:25","modified_gmt":"2024-06-19T05:55:25","slug":"self-test-4-2","status":"publish","type":"page","link":"https:\/\/sisu.ut.ee\/measurement\/self-test-4-2\/","title":{"rendered":"Self-test 4.2"},"content":{"rendered":"<div id=\"watupro_quiz\" class=\"quiz-area single-page-quiz\">\n<p id=\"submittingExam14\" style=\"display:none;text-align:center;\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\"><\/p>\n\n\n\n<form action=\"\" method=\"post\" class=\"quiz-form\" id=\"quiz-14\" enctype=\"multipart\/form-data\">\n<div class=\"watu-question \" id=\"question-1\" style=\";\"><div id=\"questionWrap-1\" class=\"   watupro-question-id-52\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">1. <\/span>After calibrating the 10 mL pipette it turned out, that the correction of the pipette is 0.03 mL. Manufacturer has indicated on the pipette that the uncertainty is \u00b10.03 mL. Is it allowed to use this pipette?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_1\" value=\"52\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType52\" class=\"answerTypeCnt1\" value=\"radio\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices52\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-52[]\" id=\"answer-id-174\" class=\"answer   answerof-52 \" value=\"174\"><label for=\"answer-id-174\" id=\"answer-label-174\" class=\" answer\"><span><p>Absolutely not!<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-52[]\" id=\"answer-id-175\" class=\"answer   answerof-52 \" value=\"175\"><label for=\"answer-id-175\" id=\"answer-label-175\" class=\" answer\"><span><p>Yes, it is allowed.<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-1\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-52\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn52\" class=\"liveResultBtn1 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(52, 1);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-2\" style=\";\"><div id=\"questionWrap-2\" class=\"   watupro-question-id-53\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">2. <\/span>Which two of the followings uncertainty sources are the most important by calibrating a pipette?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_2\" value=\"53\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType53\" class=\"answerTypeCnt2\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices53\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-53[]\" id=\"answer-id-179\" class=\"answer   answerof-53 \" value=\"179\"><label for=\"answer-id-179\" id=\"answer-label-179\" class=\" answer\"><span><p>Uncertainty of the content of dissolved gases from air in the water used for calibration\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-53[]\" id=\"answer-id-176\" class=\"answer   answerof-53 \" value=\"176\"><label for=\"answer-id-176\" id=\"answer-label-176\" class=\" answer\"><span><p>Repeatability\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-53[]\" id=\"answer-id-177\" class=\"answer   answerof-53 \" value=\"177\"><label for=\"answer-id-177\" id=\"answer-label-177\" class=\" answer\"><span><p>Density of the water at particular temperature\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-53[]\" id=\"answer-id-178\" class=\"answer   answerof-53 \" value=\"178\"><label for=\"answer-id-178\" id=\"answer-label-178\" class=\" answer\"><span><p>Possible difference of the temperature in case of calibration and measuring\u00a0<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-2\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-53\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn53\" class=\"liveResultBtn2 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(53, 2);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-3\" style=\";\"><div id=\"questionWrap-3\" class=\"   watupro-question-id-54\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">3. <\/span><span style=\"line-height: 1.6em;\">Which equations can be used for calculating the repeatability uncertainty of titration\u00a0(n \u2013 number of the measurements, \u00a0x<sub>i\u00a0<\/sub>\u2013 i-th measured value, \u00a0x<sub>m<\/sub> \u2013 arithmetic mean of the values)?\u00a0<\/span><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_3\" value=\"54\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType54\" class=\"answerTypeCnt3\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices54\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-54[]\" id=\"answer-id-181\" class=\"answer   answerof-54 \" value=\"181\"><label for=\"answer-id-181\" id=\"answer-label-181\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"182\" height=\"57\" class=\"alignnone wp-image-215\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/test1-6b.png\" title=\"test1-6b.png\" alt=\"test1-6b.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-54[]\" id=\"answer-id-185\" class=\"answer   answerof-54 \" value=\"185\"><label for=\"answer-id-185\" id=\"answer-label-185\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"182\" height=\"63\" class=\"alignnone wp-image-219\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/test1-6f.png\" title=\"test1-6f.png\" alt=\"test1-6f.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-54[]\" id=\"answer-id-183\" class=\"answer   answerof-54 \" value=\"183\"><label for=\"answer-id-183\" id=\"answer-label-183\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"193\" height=\"66\" class=\"alignnone wp-image-217\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/test1-6d.png\" title=\"test1-6d.png\" alt=\"test1-6d.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-54[]\" id=\"answer-id-180\" class=\"answer   answerof-54 \" value=\"180\"><label for=\"answer-id-180\" id=\"answer-label-180\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"111\" height=\"53\" class=\"alignnone wp-image-214\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/test1-6a.png\" title=\"test1-6a.png\" alt=\"test1-6a.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-54[]\" id=\"answer-id-182\" class=\"answer   answerof-54 \" value=\"182\"><label for=\"answer-id-182\" id=\"answer-label-182\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"184\" height=\"65\" class=\"alignnone wp-image-216\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/test1-6c.png\" title=\"test1-6c.png\" alt=\"test1-6c.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-54[]\" id=\"answer-id-184\" class=\"answer   answerof-54 \" value=\"184\"><label for=\"answer-id-184\" id=\"answer-label-184\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"249\" height=\"59\" class=\"alignnone wp-image-218\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/test1-6e.png\" title=\"test1-6e.png\" alt=\"test1-6e.png\"><\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-3\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-54\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn54\" class=\"liveResultBtn3 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(54, 3);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-4\" style=\";\"><div id=\"questionWrap-4\" class=\"   watupro-question-id-55\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">4. <\/span>You have to assess the data of the purple automatic pipette (volume range 0.5 \u2013 5 ml) calibration that your colleague has performed. Which of the following datasets obtained from calibration represents reliable experimental results, assuming that the pipette conforms to specifications?\u00a0All volumes are presented in milliliters. The manufacturer specifications are given in the table.<br>\r\n<br>\r\n<img loading=\"lazy\" decoding=\"async\" width=\"560\" height=\"186\" class=\"alignnone wp-image-285\" title=\"4-2-7-tabel.png\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-7-tabel.png\" alt=\"4-2-7-tabel.png\" srcset=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-7-tabel.png 560w, https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-7-tabel-300x100.png 300w\" sizes=\"auto, (max-width: 560px) 100vw, 560px\"><\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_4\" value=\"55\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType55\" class=\"answerTypeCnt4\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices55\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-55[]\" id=\"answer-id-188\" class=\"answer   answerof-55 \" value=\"188\"><label for=\"answer-id-188\" id=\"answer-label-188\" class=\" answer\"><span><p>The pipette was adjusted to 2.500 ml and the following volumes were obtained by repeated pipetting (all in ml): 2.503, 2.489, 2.494, 2.507, 2.504, 2.500, 2.493, 2.497, 2.500, 2.496 ml\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-55[]\" id=\"answer-id-186\" class=\"answer   answerof-55 \" value=\"186\"><label for=\"answer-id-186\" id=\"answer-label-186\" class=\" answer\"><span><p>The pipette was adjusted to 0.500 ml and the following volumes were obtained by repeated pipetting (all in ml): 0.484, 0.510, 0.519, 0.501, 0.511, 0.492, 0.517, 0.491, 0.479, 0.512<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-55[]\" id=\"answer-id-187\" class=\"answer   answerof-55 \" value=\"187\"><label for=\"answer-id-187\" id=\"answer-label-187\" class=\" answer\"><span><p>The pipette was adjusted to 5.000 ml and the following volumes were obtained by repeated pipetting (all in ml): 4.910, 4.887, 4.890, 4.892, 4.876, 4.882, 4.887, 4.896, 4.895, 4.890\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-55[]\" id=\"answer-id-189\" class=\"answer   answerof-55 \" value=\"189\"><label for=\"answer-id-189\" id=\"answer-label-189\" class=\" answer\"><span><p>The pipette was adjusted to 5.000 ml and the following volumes were obtained by repeated pipetting (all in ml): 4.999, 5.001 ml\u00a0<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-4\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-55\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn55\" class=\"liveResultBtn4 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(55, 4);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-5\" style=\";\"><div id=\"questionWrap-5\" class=\"   watupro-question-id-56\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">5. <\/span>How can we calculate the standard uncertainty of a quantity <em>Y<\/em>, which has several uncertainty sources, which all have been expressed by the respective standard uncertainties (all of them\u00a0 have the same units)?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_5\" value=\"56\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType56\" class=\"answerTypeCnt5\" value=\"radio\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices56\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-56[]\" id=\"answer-id-191\" class=\"answer   answerof-56 \" value=\"191\"><label for=\"answer-id-191\" id=\"answer-label-191\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"226\" height=\"37\" class=\"alignnone wp-image-258\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-8b.png\" title=\"4-2-8b.png\" alt=\"4-2-8b.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-56[]\" id=\"answer-id-190\" class=\"answer   answerof-56 \" value=\"190\"><label for=\"answer-id-190\" id=\"answer-label-190\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"187\" height=\"27\" class=\"alignnone wp-image-257\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-8a.png\" title=\"4-2-8a.png\" alt=\"4-2-8a.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-56[]\" id=\"answer-id-192\" class=\"answer   answerof-56 \" value=\"192\"><label for=\"answer-id-192\" id=\"answer-label-192\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"231\" height=\"60\" class=\"alignnone wp-image-259\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-8c.png\" title=\"4-2-8c.png\" alt=\"4-2-8c.png\"><\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-5\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-56\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn56\" class=\"liveResultBtn5 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(56, 5);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-6\" style=\";\"><div id=\"questionWrap-6\" class=\"   watupro-question-id-57\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">6. <\/span>Which is more accurate titration procedure, gravimetric or volumetric titration?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_6\" value=\"57\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType57\" class=\"answerTypeCnt6\" value=\"radio\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices57\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-57[]\" id=\"answer-id-193\" class=\"answer   answerof-57 \" value=\"193\"><label for=\"answer-id-193\" id=\"answer-label-193\" class=\" answer\"><span><p>Volumetric\u00a0<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-57[]\" id=\"answer-id-194\" class=\"answer   answerof-57 \" value=\"194\"><label for=\"answer-id-194\" id=\"answer-label-194\" class=\" answer\"><span><p>Gravimetric\u00a0<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-6\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-57\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn57\" class=\"liveResultBtn6 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(57, 6);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-7\" style=\";\"><div id=\"questionWrap-7\" class=\"   watupro-question-id-58\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">7. <\/span>Which could be the minimal number of parallel measurements in the case of correct pipette calibration or in the case of repeatability determination?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_7\" value=\"58\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType58\" class=\"answerTypeCnt7\" value=\"radio\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices58\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-58[]\" id=\"answer-id-198\" class=\"answer   answerof-58 \" value=\"198\"><label for=\"answer-id-198\" id=\"answer-label-198\" class=\" answer\"><span><p>10<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-58[]\" id=\"answer-id-197\" class=\"answer   answerof-58 \" value=\"197\"><label for=\"answer-id-197\" id=\"answer-label-197\" class=\" answer\"><span><p>5<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-58[]\" id=\"answer-id-196\" class=\"answer   answerof-58 \" value=\"196\"><label for=\"answer-id-196\" id=\"answer-label-196\" class=\" answer\"><span><p>3<\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"radio\" name=\"answer-58[]\" id=\"answer-id-195\" class=\"answer   answerof-58 \" value=\"195\"><label for=\"answer-id-195\" id=\"answer-label-195\" class=\" answer\"><span><p>1<\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-7\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-58\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn58\" class=\"liveResultBtn7 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(58, 7);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-8\" style=\";\"><div id=\"questionWrap-8\" class=\"   watupro-question-id-59\">\n\t\t\t<div class=\"question-content\"><p><span class=\"watupro_num\">8. <\/span>In the lab a 10 ml pipette was calibrated by repeatedly pipetting 10 ml of water and weighing it. The following results were obtained (all in ml): 9.9978; 10.0062; 10.0020; 10.0047; 9.9998; 9.9982; 10.0023; 10.0034; 10.0012; 9.9994. Please provide four decimal places after the decimal point.<\/p>\n<p>What is the mean pipetted volume (with unit)? Please present the answer with 4 decimal places.<\/p>\n<p><input type=\"text\" size=\"10\" name=\"gap_59_1\" class=\"watupro-gap answer answerof-59\" value=\"\"><\/p>\n<p>What is the volume that is reasonable to assign to the pipette after calibration (with unit)? Please present the answer with 4 decimal places.<\/p>\n<p><input type=\"text\" size=\"10\" name=\"gap_59_2\" class=\"watupro-gap answer answerof-59\" value=\"\"><\/p>\n<p>What is the repeatability standard deviation of pipetting with this pipette (with unit)? Please present the answer with 4 decimal places.<\/p>\n<p><input type=\"text\" size=\"10\" name=\"gap_59_3\" class=\"watupro-gap answer answerof-59\" value=\"\"><\/p>\n<input type=\"hidden\" name=\"question_id[]\" id=\"qID_8\" value=\"59\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType59\" class=\"answerTypeCnt8\" value=\"gaps\"><!-- end question-content--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-8\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-59\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn59\" class=\"liveResultBtn8 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(59, 8);\"><\/p>\n\t   <div class=\"watu-question \" id=\"question-9\" style=\";\"><div id=\"questionWrap-9\" class=\"   watupro-question-id-62\">\n\t\t\t<div class=\"question-content\"><div><span class=\"watupro_num\">9. <\/span>Which equations can be used for calculating the repeatability uncertainty\u00a0of single pipetting \u00a0(n \u2013 number of the measurements, \u00a0xi\u00a0\u2013 i-th measured value, \u00a0xm\u00a0\u2013 arithmetic mean of the values)?<\/div><input type=\"hidden\" name=\"question_id[]\" id=\"qID_9\" value=\"62\" class=\"watupro-question-id\"><input type=\"hidden\" id=\"answerType62\" class=\"answerTypeCnt9\" value=\"checkbox\"><!-- end question-content--><\/div><div class=\"question-choices watupro-choices-columns \" id=\"questionChoices62\"><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-62[]\" id=\"answer-id-204\" class=\"answer   answerof-62 \" value=\"204\"><label for=\"answer-id-204\" id=\"answer-label-204\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"179\" height=\"62\" class=\"alignnone wp-image-298\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-5-3.png\" title=\"4-2-5-3.png\" alt=\"4-2-5-3.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-62[]\" id=\"answer-id-205\" class=\"answer   answerof-62 \" value=\"205\"><label for=\"answer-id-205\" id=\"answer-label-205\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"179\" height=\"64\" class=\"alignnone wp-image-299\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-5-4.png\" title=\"4-2-5-4.png\" alt=\"4-2-5-4.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-62[]\" id=\"answer-id-203\" class=\"answer   answerof-62 \" value=\"203\"><label for=\"answer-id-203\" id=\"answer-label-203\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"164\" height=\"60\" class=\"alignnone wp-image-297\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-5-2.png\" title=\"4-2-5-2.png\" alt=\"4-2-5-2.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-62[]\" id=\"answer-id-207\" class=\"answer   answerof-62 \" value=\"207\"><label for=\"answer-id-207\" id=\"answer-label-207\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"168\" height=\"61\" class=\"alignnone wp-image-301\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-5-6.png\" title=\"4-2-5-6.png\" alt=\"4-2-5-6.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-62[]\" id=\"answer-id-206\" class=\"answer   answerof-62 \" value=\"206\"><label for=\"answer-id-206\" id=\"answer-label-206\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"233\" height=\"56\" class=\"alignnone wp-image-300\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-5-5.png\" title=\"4-2-5-5.png\" alt=\"4-2-5-5.png\"><\/p><\/span><\/label><\/div><div class=\"watupro-question-choice  \" dir=\"auto\"><input type=\"checkbox\" name=\"answer-62[]\" id=\"answer-id-202\" class=\"answer   answerof-62 \" value=\"202\"><label for=\"answer-id-202\" id=\"answer-label-202\" class=\" answer\"><span><p><img loading=\"lazy\" decoding=\"async\" width=\"97\" height=\"49\" class=\"alignnone wp-image-296\" style=\"\" src=\"https:\/\/sisu.ut.ee\/wp-content\/uploads\/sites\/18\/4-2-5-1.png\" title=\"4-2-5-1.png\" alt=\"4-2-5-1.png\"><\/p><\/span><\/label><\/div><!-- end question-choices--><\/div><!-- end questionWrap--><\/div>\t\t\t\t\t<div style=\"display:none;\" id=\"liveResult-9\">\t\t   \n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t\t\t\t\t<\/div>\t\n\t\t\t<\/div> \n\t   \t<p id=\"liveResBtn-62\" style=\"clear:both;\"><input type=\"button\" id=\"liveResultBtn62\" class=\"liveResultBtn9 watupro-live-result-btn\" value=\"See Answer\" onclick=\"WatuPRO.liveResult(62, 9);\"><\/p>\n\t   <div style=\"display:none\" id=\"question-10\">\n\t<div class=\"question-content\">\n\t\t<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/sisu.ut.ee\/wp-content\/plugins\/watupro\/img\/loading.gif\" width=\"16\" height=\"16\" alt=\"Loading...\" title=\"Loading...\">\u00a0Loading...\t<\/div>\n<\/div>\n\n<br>\n\t\n\t\t\t<div class=\"watupro_buttons flex \" id=\"watuPROButtons14\">\n\t\t  <div id=\"prev-question\" style=\"display:none;\"><input type=\"button\" value=\"&lt; Previous\" onclick=\"WatuPRO.nextQuestion(event, 'previous');\"><\/div>\t\t  \t\t  \t\t   \n\t\t   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