Please Answer Part 8

Based on a careful work study in the Hofstetter Corp., the results shown in the following table have been observed:

Element Performance Rating 1 2 3 4 5 Prepare daily reports 120% 34 40 32 41 38 Photocopy results 110% 13 11 36 15 14 Label and package reports 85% 3 2 5 5 4 Distribute reports 90%. 16 19 21 17 45

Performance Observation (minutes per cycle) Element Rating 1 2 3 4 5 Prepare daily reports % Photocopy results % * Label and package reports % Distribute reports % ^ * Photocopying machine broken; included as delay in the allowance factor ^ Power outage; included as delay in the allowance factor The allowance factor for this type of work is given to be %. (Round all intermediate calculations to two decimal places before proceeding with further calculations.)

Part 2 The normal time for the "prepare daily reports" operation =44.4 minutes (round your response to two decimal places).

Part 3 The normal time for the "photocopy results" operation =14.58 minutes (round your response to two decimal places).

Part 4 The normal time for the "label and package reports" operation = 3.23 minutes (round your response to two decimal places).

Part 5 The normal time for the "distribute reports" operation =16.43 minutes (round your response to two decimal places).

Part 6 The normal time for the overall process =78.63 minutes (round your response to two decimal places).

Part 7 The standard time for this process =95.89 minutes (round your response to two decimal places).

Part 8 The number of observations that are required for a 5% confidence level within 95% accuracy = enter your response here (round your response to the immediate higher whole number).