Author Question: A manager who is conducting a time study now needs an accuracy of 0.1 minutes, rather than 0.2 ... (Read 94 times)

Marty · **on:** Dec 3, 2019

Question 1

For a time study, the three factors that determine how large a sample size to take are
◦ actual time, standard time, and mean time.
◦ the level of confidence, the z-value, and normal time.
◦ actual time, normal time, and standard time.
◦ the level of confidence, the z-value, and the work sampling idle percent.
◦ needed accuracy, desired confidence, and standard deviation of the initial sample.

Question 2

A manager who is conducting a time study now needs an accuracy of ±0.1 minutes, rather than ±0.2 minutes as in the past. Because of this change in accuracy, the adequate sample size becomes
◦ one-fourth as large.
◦ four times as large.
◦ eight times as large.
◦ twice as large.
◦ one-half as large.

coyin · **Reply #1 on:** Dec 3, 2019

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