Question

A sample of 25 freshman students made a mean score of 77 on a test designed to measure the attitude toward colleges. The sample standard deviation was 10. Assuming the data comes from a normal population, (13) The null and alternative hypotheses for testing the hypothesis that the mean score is different than 80 are: (A) H0: ? = 80 vs Ha: ? ? 80 (B) H0: ? = 80 vs Ha: ? < 80 (C) H0: ? = 80 vs Ha: ? > 80 (D) H0: ? = 77 vs Ha: ? < 77 (14) The test statistic for this statistical hypothesis is: (A) -1.500 (B) -2.025 (C) 3.258 (D) 0 (15) At the 5% significance level, the rejection rejoin is (A) (<3.052, >3.861) (B) (<6.972, >6.972) (C) (<-3.847, >4.512) (D) (<-2.064, >2.064) (16) At the 5% significance level we are able to : (A) Reject H0 (B) Fail to Reject H0

          A sample of 25 freshman students made a mean score of 77 on a test designed to measure the attitude toward colleges. The sample standard deviation was 10. Assuming the data comes from a normal population,

(13) The null and alternative hypotheses for testing the hypothesis that the mean score is different than 80 are:
(A) H0: ? = 80 vs Ha: ? ? 80 (B) H0: ? = 80 vs Ha: ? < 80
(C) H0: ? = 80 vs Ha: ? > 80 (D) H0: ? = 77 vs Ha: ? < 77

(14) The test statistic for this statistical hypothesis is:
(A) -1.500 (B) -2.025 (C) 3.258 (D) 0

(15) At the 5% significance level, the rejection rejoin is
(A) (<3.052, >3.861) (B) (<6.972, >6.972)
(C) (<-3.847, >4.512) (D) (<-2.064, >2.064)

(16) At the 5% significance level we are able to :
(A) Reject H0 (B) Fail to Reject H0

A sample of 25 freshman students made a mean score of 77 on a test designed to measure the attitude toward colleges. The sample standard deviation was 10. Assuming the data comes from a normal population,

(13) The null and alternative hypotheses for testing the hypothesis that the mean score is different than 80 are:
(A) H0: ? = 80 vs Ha: ? ? 80 (B) H0: ? = 80 vs Ha: ? < 80
(C) H0: ? = 80 vs Ha: ? > 80 (D) H0: ? = 77 vs Ha: ? < 77

(14) The test statistic for this statistical hypothesis is:
(A) -1.500 (B) -2.025 (C) 3.258 (D) 0

(15) At the 5% significance level, the rejection rejoin is
(A) (<3.052, >3.861) (B) (<6.972, >6.972)
(C) (<-3.847, >4.512) (D) (<-2.064, >2.064)

(16) At the 5% significance level we are able to :
(A) Reject H0 (B) Fail to Reject H0

Added by Michael G.

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