In: Statistics and Probability
A life insurance salesperson claims the average worker in the
city of Winnipeg has no more than $25,000 of personal life
insurance. To test this claim, you randomly sample 100 workers in
Winnipeg. You find that this sample of workers averages $26,250 of
personal life insurance. The population standard deviation is
$12,000.
Determine whether the test shows enough evidence to reject the null
hypothesis posed by the salesperson. Assume α = 0.05.
The value of the test statistic is?