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- What is meant by the sample space of an experiment?If a null hypothesis is rejected at the 0.05 level of significance, it must be rejected at the 0.01 level. True or False?if a hypothesis is not rejected at the 0.10 significance level, it A. Must be rejected at the 0.05 level. B. May be rejected at the 0.05 level. C. Will not be rejected at the 0.05 level. D. Must be rejected at the 0.01 level.
- If a hypothesis is rejected at the 1% level of significance, it а. will always be rejected at the 5% level O b. may be rejected or, may be accepted at the 5% level O c. will always be accepted at the 5% level O d. NoneIf a hypothesis is rejected at the 0.025 level of significance, it: may or may not be rejected at the 0.01 level. must be rejected at any level. must be rejected at the 0.01 level. must not be rejected at the 0.01 level.If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT = -0.76? If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT = +2.21? If you use a 0.10 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting a null hypothesis that the population mean equals 500 if you use the Z test? If you use a 0.01 level of significance in a two-tail hypothesis test, what is your decision rule for rejecting H0 : m = 12.5 if you use the Z test? What is the p-value if, in a two-tail hypothesis test, ZSTAT = +2.00? What is the p-value if, in a two-tail hypothesis test, ZSTAT = -1.38?
- If you use a 0.05 level of significance in a two-tail hypothesis test, what decision will you make if ZSTAT=−1.52? Determine the decision rule.Which of the following is the correct conclusion for the hypothesis test? A. At the 5% significance level, reject H0; the data provide sufficient evidence to conclude that women who take folic acid are at lesser risk of having children with major birth defects. B. At the 5% significance level, reject H0; the data do not provide sufficient evidence to conclude that women who take folic acid are at lesser risk of having children with major birth defects. C. At the 5% significance level, do not reject H0; the data do not provide sufficient evidence to conclude that women who take folic acid are at lesser risk of having children with major birth defects. D. At the 5% significance level, do not reject H0; the data provide sufficient evidence to conclude that women who take folic acid are at lesser risk of having children with major birth defects. Part 5 b. This study is ▼ an observational study, a designed experiment, because the…For a lower-tailed test, the test statistic is found to be 0. The p-value for this test is 0.5 0.025 0.05 -0.5
- Last year's mean hourly wage (in dollars) for all hospital clerical workers in a large state was 6.75. An administrator for the state believes that this year's mean hourly wage for hospital clerical workers is greater than last year's mean. She hires statisticians to sample a number of hospital clerical workers and to carry out a hypothesis test. State the null hypothesis H0 and the alternative hypothesis H1 that would be used for this test. Ho= H1=Suppose that a hypothesis test is performed at a small significance level. State the appropriate conclusion in each case by referring to Key Fact 2. a. The null hypothesis is rejected.b. The null hypothesis is not rejected.The P-value for a hypothesis test is shown. Use the P-value to decide whether to reject. Ho when the level of significance is (a) a = 0.01, (b) a = 0.05, and (c) a=0.10. P=0.0411 (a) Do you reject or fail to reject Ho at the 0.01 level of significance? OA. Fail to reject Ho because the P-value, 0.0411, is greater than a = 0.01. OB. Fail to reject Ho because the P-value, 0.0411, is less than a =0.01. OC. Reject Ho because the P-value, 0.0411, is greater than a = 0.01. OD. Reject Ho because the P-value, 0.0411, is less than a = 0.01 (b) Do you reject or fail to reject Ho at the 0.05 level of significance? O A. Reject Ho because the P-value, 0.0411, is greater than a = 0.05. OB. Fail to reject Ho because the P-value, 0.0411, is less than a = 0.05. OC. Fail to reject Ho because the P-value, 0.0411, is greater than a = 0.05. O D. Reject Ho because the P-value, 0.0411, is less than a = 0.05. CECO
