Stats homework help

Question

The claim is that the IQ scores of statistics professors are normally​ distributed, with a mean

less thanless than

117117.

A sample of

1313

professors had a mean IQ score of

114114

with a standard deviation of

1010.

Find the value of the test statistic.

Answer 1

(117-114)/ 10/sqrt(13) =

3 / 10/sqrt(13) =

3/ 2.7735 = 1.0816654-

Accepts the null hypothesis that the mean is less than 117