Question: Problems 7 – 9 find the critical value or values and determine the conclusion. The test value is given in the problem so you don’t have to calculate it but show work.

A job placement director claims that the average starting salary for nurses is $24,000. A sample of 10 nurse’s salaries has a mean of $23,450 and a standard deviation of $400. Is there enough evidence to reject the director’s claim at

Ho: \(\mu =\\)24,000$ H1: \(\mu \ne \\)24,000$

The test value is t = - 4.35