1. if you use a 0.075 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting H0: =16.9 if you use the Z test?

Which of the following decision rules is correct?

A. Reject H0 if 1.44

B. Reject H0 if ZSTAT<1.44 or ZSTAT>1.44.

C. Reject H0 if 1.78

D. Reject H0 if ZSTAT<1.78 or ZSTAT>1.78.

2. In a one-tail hypothesis test where you reject H0 only in the lower tail, what is the p-value

if ZSTAT= -2.55

The p-value is ________

(Round to four decimal places as needed.)

3. In a one-tail hypothesis test where you reject H0 only in the lower tail, it was found that the p-value is 0.8997 if ZSTAT=+1.28. What is the statistical decision if you test the null hypothesis at the

0.10 level of significance?

A. Reject the null hypothesis because the p-value is greaterthanorequalto the level of significance.

B. Failtoreject the null hypothesis because the p-value is greaterthanorequalto the level of significance.

C. Reject the null hypothesis because the p-value is lessthan the level of significance.

D. Failtoreject the null hypothesis because the p-value is lessthan the level of significance.

4. If, in a sample of n=30 selected from a normal population, X=60 and S=8, what are the critical values of t if the level of significance, , is 0.05, the null hypothesis, H0, is =50, and the alternative

hypothesis, H1, is does not equal 50

The critical values of t are_________

5. What is the p-value if, in a two-tail hypothesis test, ZSTAT=2.00?

P-value= ______