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A school had decided to hire a new vice principal. A recent issue of the NEA magazine stated that the average vice principal salary for a school of...

A school had decided to hire a new vice principal. A recent issue of the NEA magazine stated that the average vice principal salary for a school of similar size is \$60,000. At the request of the Board of Education, the principal conducts his own survey of vice principal's salaries. His survey of 25 schools revealed an average salary or \$72,000 and a standard deviation of \$9,000. Perform a hypothesis test at a 5% significance level to test the magazine's claim.

a. What is the appropriate sampling distribution to use?

b. State the null and alternative hypotheses.

c. State the decision rule at a significance level of 5% show all calculations

a) t distribution. b) H0;... View the full answer

a) t ﻿ ​ G i v e n , ​ Decision rule ​ S i n c e H 1 : μ &gt; 6 0 0 0 0 ,... View the full answer

1 comment
• degrees of freedom: n-1 = 25-1=24
• oflores31
• Aug 02, 2018 at 1:05pm

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