D Question 7 0.8 pts Suppose you are going to test the hypothesis that population 1 has a mean that is exactly 2 less than the mean of population 2. Sample 1 has a mean of 34.5 and sample 2 has a mean of 30. The respective standard deviations are 5 and 9 and the sample sizes are 33 and 42. What is the test statistic? Suppose you are going to test the following hypothesis H0: mu1>=mu2; you do not assume that the variances are known. There are 40 df and alpha=.01. In this case there is one rejection region. What is the critical value? Be sure that your critical value has the right sign. Since yourt table only goes to four decimal places you only need to answer to four decimal places for this question. Q D Question 9 0.8 pts Suppose you are going to test the hypothesis that two populations have the same mean. What is the test statistic for this test when the sample averages are 6 and 7.5 and sample 1 has a standard deviation of 16 and sample 2 has a standard deviation of 15 and both samples have 32 observations? Choose the best or most correct statement. 0 If the p-value for the test is less than alpha then the test statistic is in the rejection region. 0 There is no practical situation in which employees of a company are paid to pay attention to p-values. Q If p-value > alpha we reject the null hypothesis. 0 The rejection region shrinks in size as the absolute value of the test statistic gets larger. D Question 1 1 0.8 pts Suppose you are going to test the hypothesis that two populations have the same mean; you do not assume that the variances are known. There are 32 clf and alpha=.05. In this case there are two rejection regions and two critical values (one positive and one negative). What is the positive critical value? Since your t table only goes to three decimal places you only need to answer to three decimal places for this