55 If a test statistic falls in the critical region the null

55. If a test statistic falls in the critical region the null hypothesis is _______________.

a) Rejected

b) Not Rejected

c) It depends

d) accepted

56.  A ________-tailed test is used if we want to test the hypothesis that the true proportion is below a specified value.

a) One-tail

b) Two-tail  

c) One-sample    

d) Two-sample

57. A ________-tailed test is used if we want to test the hypothesis that the true mean is different from a specified value.

a) One-tail

b) Two-tail

c) One-sample

d) Two-sample

58. If the null hypothesis is rejected, the researcher concludes that there is insufficient evidence to believe that the difference between the sample statistic and the hypothesized parameter is significant.

a) True

b) False

59. If the null hypothesis is rejected, the researcher concludes that there is sufficient evidence to believe that the difference between the sample statistic and the hypothesized parameter is due only to chance?

a) True

b) False

c) unknown

d) indeterminate

60. If the null hypothesis is rejected, the researcher concludes that there is sufficient evidence to believe that the difference between the sample statistic and the hypothesized parameter is large enough to be deemed statistically significant?

a) True

b) False  

Solution

55. A. Rejected

56. As it says \"below\", then we just care about one tail (the left tail).

Thus, OPTION A: ONE TAIL.

57.

As it says \"different\", we care about both the left and right tails.

Thus, OPTION B: TWO TAIL.

58.

False. It is the other way around.

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