Question

Staff members at a marketing firm claim that the average annual salary of the firm's staff is less than the state's average annual salary, which is $35,000. To test this claim, a random sample of 30 of the firm's staff members is analyzed. The mean annual salary is $32,450. Assume the population standard deviation is $4700, At the 5% level of significance, test the staff's claim.

Answer 1

Answer:67,450 x 30 x 47,00 / .5

2023500 x 4700 = 951,0450000/.5 = 19020200000

Explanation: