A bank manager wants to determine the percent of time the bank's tellers are working and idle. He decides to use work sampling, and his initial estimate is that the tellers are idle 20% of the time
Approximately how many observations should be taken to be 95% confident that the results will not be more than 5% away from the true result?
A) 6
B) 16
C) 44
D) 210
E) 246
E
Business
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A firm should seek to increase service tangibility by _____
a. adding computers b. utilizing only the services of the owner c. offering warranties d. matching demand and supply
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