8:19 all 56 @ Unit 7 Section 9.3: 2 Sample Hypothesis Test - Independent Mean Assessment Score: 0/14 0/14 answered Progress saved Done '\\I' @ Question 1 v & 0/1 pt O 4 O Details You wish to test the following claim (H,) at a significance level of a = 0.05. Hy:p1 = po Hy oy MD H1 : PN PD O The test is: right-tailed left-tailed two-tailed The sample consisted of 35 night students, with a sample mean GPA of 2. 19 and a standard deviation of 0.03, and 35 day students, with a sample mean GPA of 2.24 and a standard deviation of 0.02. The test statistic is: (to 2 decimals) The p-value is: (to 2 decimals) Based on this we: O Reject the null hypothesis O Fail to reject the null hypothesis Submit Question myopenmath.com8:19 .1 5G 23 Test the claim that the mean GPA of night students is smaller than the mean GPA of day students at the .005 significance level. The null and alternative hypothesis would be: Ho : PN = PD Ho : PN = PD Ho : PN = PD H1 : PN > PD H1 : PN MD O O The test is: right-tailed two-tailed left-tailed The sample consisted of 50 night students, with a sample mean GPA of 3.3 and a standard deviation of 0.02, and 80 day students, with a sample mean GPA of 3.31 and a standard deviation of 0.07. The test statistic is: (to 2 decimals) The critical value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis Submit Question myopenmath.com8:20 .1 5G 23 Unit 7 Section 9.3: 2 Sample Hypothesis Test - Independent Mean Assessment Score: 0/14 0/14 answered Progress saved Done Vo . . . Question 5 0/1 pt 9 4 0 Details Calculate the test-statistic, t with the following information. n1 = 50, x1 = 2.38, $1 = 0.76 n2 = 45, X2 = 2.08, $2 = 0.99 Rounded to 2 decimal places. Submit Question AA myopenmath.com C8:20 .1 5G 23 Unit 7 Section 9.3: 2 Sample Hypothesis Test - Independent Mean Assessment Score: 0/14 0/ 14 answered Progress saved Done Vo . . . . Question 6 0/1 pt 9 4 0 Details Calculate the test-statistic, t with the following information. n1 = 35, x1 = 2.35, $1 = 0.63 n2 = 20, X2 = 2, $2 = 0.31 Rounded to 2 decimal places. Submit Question AA myopenmath.com C m8:20 .1 5G 23 O Question 7 > 0/1 pt 9 4 0 Details Test the claim that the mean GPA of night students is larger than the mean GPA of day students at the 0.005 significance level. The null and alternative hypothesis would be: Ho : PN PD H1 : UN F MD H1 : PN MD H1 : UN & 0/1 pt 4 @ Details You are testing the claim that the mean GPA of night students is different than the mean GPA of day students. You sample 60 night students, and the sample mean GPA is 2.18 with a standard deviation of 0.92 You sample 40 day students, and the sample mean GPA is 2.21 with a standard deviation of 1 Calculate the test statistic, rounded to 2 decimal places @& myopenmath.com 8:20 al 56 Assessment Score: 0/14 0/14 answered Progress saved Done V0 af) @ Question 9 v PD O O Ho : PN = PD Ho : MN = MD HO : MN = MD H1 : PN MD H1 : IN # ND The test is: right-tailed two-tailed left-tailed The sample consisted of 80 night students, with a sample mean GPA of 2.28 and a standard deviation of 0.07, and 35 day students, with a sample mean GPA of 2.26 and a standard deviation of 0.05. The test statistic is: (to 2 decimals) The positive critical value is: (to 2 decimals) Based on this we: O Fail to reject the null hypothesis O Reject the null hypothesis myopenmath.com8:20 .1 5G 22 ASSESSITICIIL Score: 0/14 0/ 14 answered Progress saved Done Question 13 & 0/1pt D 4 @ Details For each scenario listed on the left, determine whether the scenario represents an Independent Samples or Matched pairs situation by placing the appropriate letter in the box provided. - Comparing pain levels of a group receiving a placebo to a group receiving a medicine - Comparing pre-test scores before training to post-test scores - Comparing pain levels before and after treatment with magnetic therapy - Comparing the number of speeding tickets received by men to the number received by women a. Independent Samples b. Matched Pairs Submit Question @& myopenmath.com