help answer all questions on page please 9, If the p-value is less than in a two
ID: 1129771 • Letter: H
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help answer all questions on page please
9, If the p-value is less than in a two-tailed test, a. the null hypothesis should not be rejected b. the null hypothesis should be rejected. c. a one-tailed test should be used. d. no conclusion should be reached. 10. Ifthe p-value is greater than in a one-tailed test, a. the null hypothesis should not be rejected b. the null hypothesis should be rejected a two-tailed test should be used. no conclusion should be reached c, d. 11. For a two-tailed test with a sample size of 40, the null hypothesis will not be rejected at a 5% level of significance if the z-test statistic is a. b. between -1.96 and 1.96 c. ess than 1.645 greater than 1.96 d. greater than-1.645 A two-tailed test is performed at a 5% level of significance. 12, The observed z test statistic is 1.74. The null hypothesis a. must be rejected should not be rejected c. may or may not be rejected, depending on the sample size. 13. The average life expectancy of tires produced by the Whitney Tire Company has been 40,000 miles. Management believes that due to a new production process, the life expectancy of its tires has increased. In order to test the validity of this belief, the correct set of hypotheses is Ho: 40,000 Ho:p12 40,000 Ho: 40,000 H.. 2 40,000. Ha: s 40,000 H,: 40,000 c. d. Exhibit (for the following 5 questions) n49 Ho: = 50 x-54.8 H,: > 50 tail test. Refer to Exhibit above. This test is a (a) lower (b) upper (c) two 14. The test statistic equals a. b. 0.3849 15. 0.1714 1.2 1.2Explanation / Answer
9. The correct answer should be B. If the p value is less than alpha the null hypothesis is rejected.
10. The correct answer should be A.
11. The correct answer should be B.
12. The correct answer should be B.
13. The correct answer should be D.
14. The correct answer should be B.
15. The correct answer should be D.
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