3) A trainee was tested on his proficiency in pipetting by weighing water by following the procedure for calibrating a pipette, but he repeated until he had 5 NOT. additions. He used a clean 20mL A-grade pipette that had been calibrated CHEM recently. The results determined are given in the table below. Temperature of distilled water: 22.9C THIS.MATERIAL-IS- ND-DISTRIBUTION: OF-THE-MATERIAL NOT.UPLOAD.ONT 5.PROHIBITED. DO T.THE.SCHOOL.OF- CHEMISTRY,UNIVERSITY-OF-THE-WITWATERSRAND, JOHANNESBURG, SOUTH-AFRICA.A.ANY. a) Calculate the volume of water for each addition. b) Calculate the average and standard deviation of the five additions. c) Assuming a 2.0% error in the pipetting volume is allowed for this proficiency test, does the trainee pass? Explain. d) Would you expect the errors in measurement to be systematic or random errors? Explain. ailSTRY Q0 11 CHEM2032A SEMESTER-1 (2023) EXPERIMENT: Ex1 - Accuracy, precision and statistics DEADLINE: 27th Feb 2023; 10am - Submission to Wilkinson Lab TTHIS-MATERIAL-IS-PROTECTED-BY-COPYRIGHT.LAWS.REPRODUCTION-AND-DISTRIBUTION NF- THE If the errors are due to pipetting issues, state 5 things that the trainno may ner to consider to improve his results. Also state whether the iss 11/13 iu too high or too low, or a mixture of too high and too low volu. a. explain why that is the case