Standard deviation of the task time is 6 seconds

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An analyst is making a time study. What is the sample size if he wants to be 95.5% confident that the maximum error in the observed time is 2 seconds? Assume that the standard deviation of the task time is 6 seconds.

a. 25
b. 60
c. 30
d. 36
e. 49

Reference no: EM13521467

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