The Cashier of SM Supermarket claims that the mean Monthly salary of their employees is Php22,500.00 with a standard deviation of Php7,000.00 A researcher takes a random sample of 80 employees and found out that they have a mean monthly salary of Php18,750.00. Do the 80 selected employees have lower salaries than the rest ? Test the claim at 5% level of significance. The appropriate Ho and H1 are:

A. Ho: = P22,500 ; H1: < P22,500

B. Ho: P22,500. ; H1: > P22,500

C. Ho: P22,500 ; H1: < P22,500

D. Ho: E = P22,500 ; H1: P22,500

12. Test Statistic*

A. z-test one sample test

B. t-test one sample test

C. z-test two sample test

D. critical values of z

13. The computed value of test statistic is? (C after Z and t are subscripts)*

A. ZC = 4.29

B. ZC = 4.79

C. tC = 4.79

D. ZC = +4.79

14. The critical value of test statistic is = to? (TV after Z and t are subscripts)*

A. ZTv = 1.65

B. ZTv = -1.65

C. tTv = 1.65

D. tTv = 1.65

15. Type of Test?*

A. one tailed test

B. two tailed test

16. The computed value of test statistic falls in the?*

A. Rejection Region, left

B. Rejection Region, right

C. Acceptance Region, left

D. Acceptance Region, right

17. Decision is ?*

A. Reject Ho

B. Fail to Reject Ho