twoquestions are related to the following You are testing the hypothesis that th
ID: 3053329 • Letter: T
Question
twoquestions are related to the following You are testing the hypothesis that the population proportion is at least 0.75. You select a random of sample of size 400. The number of successes in the sample is 288 22 The test is, a an upper-tail test. The test statistic is 1.39 b a lower-tail test. The test statistic is -1.39. c an upper-tail test. The test statistic is 1.72. d a lower-tail test. The test statistic is-1.72 23 The p-value for the test is. a 0.0823 Reject Ho for a- 0.10, but do not reject for a-0.05. b 0.0823Reject Ho for a- 0.05, but do not reject for a- 0.10. c 0.0427 Reject Ho for ?-0.05, but do not reject for ?-001. d 0.0427 Reject Ho for ?-0.01, but do not reject for ?-0.05.Explanation / Answer
P = 0.75
p = 288 / 400 = 0.72
22) SE = sqrt(P * (1 - P) / n) = sqrt(0.75 * 0.25 / 400) = 0.0217
Z = (p - P) / SE = (0.72 - 0.75) / 0.0217 = -1.39
Option-B) a lower tail test . The test statistic is -1.39
23) P-value = P(Z < -1.39) = 0.0823
If P-value is less than significance level, then reject H0.
Option-A)
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.