Please answer all the questions A. A test of H0: ? = 0 against H1: ? > 0 is performed on the same population by two researchers independently. They use the same sample size and the same value of ? = 0.05. Which of the following will be the same for both researchers? a. The p-value of the test. b. The value of the test statistic. c. The power of the test if the true ? = 5. d. The decision whether or not to reject the null hypothesis. B. A result is called "statistically significant whenever: a. The null hypothesis is true. b. The null hypothesis is false. c. The alternative hypothesis is true. d. The p-value is less than or equal to the significance level. C. The p-value for a one-tailed test for a proportion was 0.04. If the test is two-tailed instead, the p-value would be: a. 0.02 b. 0.04 c. 0.08 d. it depends on whether the one-sided test had a "greater than" or "less than" alternative. D. The level of significance (usually 0.05) associated with a significant test is the probability: a. that the alternative hypothesis is true. b. that the null hypothesis is true. c. not to reject a true null hypothesis. d. to reject a true null hypothesis.
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