Statistics

Statistics

52. Calculate the 95% confidence interval for the following data set. Mean = 122

57. When the normality and standard deviation of a data set are known, it is best to use a(n): a. T-test b. Paired test

SD = 9 N = 30

a. 1.64 b. 119 to 125 c. 102 to 132 d. 29

c. Z-test d. F-test

58. When the normality and standard deviation of a data set are not known, it is best to use a(n): a. T-test b. Paired test

53. Calculate degrees of freedom for the following data set. Mean = 122

SD = 9 N = 30

c. Z-test d. F-test

a. 1.64 b. 119 to 125 c. 102 to 132 d. 29

59. ANOVA is also known as a(n): a. T-test b. Paired test

c. Z-test d. F-test

54. Calculate the SEM for the following data set. Mean = 122

60. When we have two samples and it is impossible to control all influencing variables, it is best to use a(n): a. T-test b. Paired test c. One-sample test d. F-test

SD = 9 N = 30

a. 1.64 b. 2.045 c. 102 to 132 d. 29

55. When the null hypothesis is rejected but it is actually true, it is called ______. a. Margin of error b. Type I error c. Z-test d. Type II error 56. When the null hypothesis is false but it is not rejected, that is a ________. a. Margin of error b. Type I error c. Z-test d. Type II error

61. The equation (1 - ) represents: a. Power b. Degrees of freedom c. Significance level d. Critical value

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