Mathematics, 26.03.2020 21:30 strent45
Computer Services, Inc. wants to determine a confidence interval for the average CPU time of their teleprocessing transactions. A sample of 51 transactions yielded a mean of 5 seconds. The population standard deviation is 2.4 seconds. Determine a 95% confidence interval for the average CPU time.
Answers: 1
level, that is the subtraction of 1 by the confidence interval divided by 2. So:
.
, so 
is the standard deviation of the population and n is the size of the sample.
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