To estimate the average annual expenses of students on books and - 8945

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To estimate the average annual expenses of students on books and class materials a sample of size 36 is taken. The average is $850 and the standard deviation is $54. A 99% confidence interval for the population mean is __________.

A.  $832.36 to $867.64

B.  $826.82 to $873.18

C.  $823.72 to $876.28

D.  $825.48 to $874.52

 
Solution Description

To estimate the average annual expenses of students on books and class materials a sample o