Homework:Section 11.3 - Inference 2 Means: IndependentSave
Math 1401 Spring 2021 Powell Xiaoyu Ma & | 04/25/21 3:12 AM Homework: Section 11.3 - Inference 2 Means: Independent Save Score: 0.5 of 1 pt 9 of 9 (9 complete) HW Score: 72.78%, 6.55 of 9 pts 11.3.21 Tutoring Question Help A physical therapist wanted to know whether the mean step pulse of men was less than the mean step pulse of women. She randomly Two sample T for Men vs Women selected 58 men and 78 women to participate in the study. Each subject was required to step up and down a 6-inch platform. The pulse N Mean StDev SE Mean of each subject was then recorded. The following results were obtained. Men 58 112.2 11.8 1.5 Women 78 118.4 14.5 1.6 98% CI for mu Men - mu Women ( - 11.56, - 0.84) T-Test mu Men = mu Women (vs H2 Detemine the P-value for this hypothesis test. P= .001 (Round to three decimal places as needed.) Should the null hypothesis be rejected? O A. Do not reject Ho, there is sufficient evidence to conclude that the two populations have different means O B. Do not reject Ho, there is not sufficient evidence to conclude that the two populations have different means. O C. Reject Ho, there is not sufficient evidence to conclude that the two populations have different means. D. Reject Ho, there is sufficient evidence to conclude that the two populations have different means (b) Construct a 99% confidence interval about #1 - H2 We are 99% confident that the mean difference is between ] and ]. (Round to two decimal places as needed. Use ascending order.) Enter your answer in the edit fields and then click Check Answer. ? All parts showing Clear All Check AnswerMath 1401 Spring 2021 Powell Xiaoyu Ma & | 04/25/21 3:13 AM Homework: Section 11.3 - Inference 2 Means: Independent Save Score: 0.5 of 1 pt 2 of 9 (9 complete) HW Score: 72.78%, 6.55 of 9 pts 11.3.3-T Tutoring Question Help Use the given statistics to complete parts (a) and (b). Assume that the populations are normally distributed. Population 1 Population 2 (a) Test whether My > H2 at the a = 0.01 level of significance for the given sample data. n 25 21 (b) Construct a 99% confidence interval about #1 - H2. 45.6 42.4 5.5 12.7 H1: 1 1 = H2 H1: My = H2 H1: My = H2 Find the test statistic for this hypothesis test. 1.07 (Round to two decimal places as needed.) Determine the P-value for this hypothesis test. .145 (Round to three decimal places as needed.) State the conclusion for this hypothesis test. O A. Reject Ho. There is sufficient evidence at the a = 0.01 level of significance to conclude that My > H2 O B. Reject Ho. There is not sufficient evidence at the #2- O C. Do not reject Ho. There is sufficient evidence at the a = 0.01 level of significance to conclude that my > H2. D. Do not reject Ho. There is not sufficient evidence at the a = 0.01 level of significance to conclude that my > #2. (b) The 99% confidence interval about Hy - H2 is the range from a lower bound of to an upper bound of (Round to three decimal places as needed.) Enter your answer in the edit fields and then click Check Answer. (? All parts showing Clear All Check
