43 A one sample test for a proportion is being performed If

43. A one sample test for a proportion is being performed. If the critical value is +2.33 and the test statistics is +1.37,

a) The null hypothesis should not be rejected.

b) The alternative hypothesis cannot be rejected.

c) The null hypothesis should be rejected.

d) The sample size should be decreased.

44. In a two-tailed test of the null hypothesis Ho: U = 16.0 using a .05 level of significance, suppose the computed test statistic has a Z value of 2.00

a) The null hypothesis cannot be rejected.

b) The alternative hypothesis should be tested.

c) A larger sample size should be taken.

d) The null hypothesis should be rejected.

45. A statistician controls ____________ by establishing the risk he or she is willing to take in terms of rejecting a true null hypothesis.

a) Alpha

b)  beta   

c) mean   

d) standard deviation

46. If a researcher rejects a true null hypothesis, she has

a) Made a correct decision

b) Made a Type I error

c) Made a Type II error

d) Increased the power of the test.

47. If a 1% level of significance is used to test a null hypothesis, there is a probability of __________ of rejecting the null hypothesis when it is true.

a) .995

b) .990

c) .010

d) .005

48 The region of rejection for a one-tailed test is

a) Always less than .05.

b) Always smaller than that for any two-tailed test.

c) Found in the tail which supports the null hypothesis.

d) Found in the tail which supports the alternative hypothesis.

Solution

Answer to question# 43)

Test critical = +2.33

Test statistic = +1.37

+1.37 < +2.33

this implies that the statistic falls in the Acceptance region

thus we fail to reject the null hypothesis

Hence answer choice A is correct