Posted by **Jasmine** on Sunday, March 25, 2012 at 2:47am.

The average annual salary of employees at Wintertime Sports was $28,750 last year. This year the company opened another store. Suppose a random sample of 18 employees had an average annual salary of $25,810 with standard deviation of s = $4230. Use a 1% level of significance to test the claim that the average annual salary for all employees is different from last year's average salary.

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