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 additions. He used a clean 20mL A-grade pipette that had been calibrated CHEM recently. The results determined are given in the table below. PERSON.UPLOADING.THIS:MATERIAL-IS:DOING.SO-ILLEGALLY. Temperature of distilled water: 22.9C THIS-MATERIALI ND.DISTRIBUTION- OF.THEMATERI/ .PROHIBITED. DOO. NOT.UPLOAD.ON CHEMISTRY,UNIVERSITY-OF-THE-WITWATERSRAND,JOHANNESBURG,-SOUTH-AFRICA.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