Mathematics, 28.01.2021 14:00 lindsay45
In a random sample of 60 computers, the mean repair cost was $150. Assume the population standard deviation is $36. Construct a 95% confidence interval for the population mean.
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. So
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In a random sample of 60 computers, the mean repair cost was $150. Assume the population standard de...
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