According to the U.S.Department of Labor,the median salary for a chiropractor in the United States is $70,720 per year. A group of recent graduates employed in the state of Colorado believe this amount is too low. In a random sample of 18 chiropractors who recently graduated, 13 began with a salary of more than $70,720. Is it reasonable to conclude that the starting salary in Colorado is more than $70,720?
Required: a.State the null and alternate hypotheses.
Ho: Median H1: Median >
b.State the decision rule.Use the 0.05 significance level
Reject Ho if
or more earned more than $70,720