Homework:Section 11.3 - Inference 2 Means: IndependentSave

Math 1401 Spring 2021 Powell Xiaoyu Ma & | 04/25/21 4:38 AM Homework: Section 11.3 - Inference 2 Means: Independent Save Score: 0.67 of 1 pt 8 of 9 (9 complete) HW Score: 84.63%, 7.62 of 9 pts 11.3.19 Tutoring Question Help A random sample of 40 adults with no children under the age of 18 years results in a mean daily leisure time of 5.42 hours, with a standard deviation of 2.27 hours. A random sample of 40 adults with children under the age of 18 results in a mean daily leisure time of 4.16 hours, with a standard deviation of 1.55 hours. Construct and interpret a 90% confidence interval for the mean difference in leisure time between adults with no children and adults with children (H1 - H2) Let my represent the mean leisure hours of adults with no children under the age of 18 and u2 represent the mean leisure hours of adults with children under the age of 18. The 90% confidence interval for (H1 - H2 ) is the range from 0.55 hours to 1.97 hours. (Round to two decimal places as needed. What is the interpretation of this confidence interval? O A. There is a 90% probability that the difference of the means is in the interval. Conclude that there is insufficient evidence of a significant difference in the number of leisure hours. O B. There is 90% confidence that the difference of the means is in the interval. Conclude that there is a significant difference in the number of leisure hours. C. There is 90% confidence that the difference of the means is in the interval. Conclude that there is insufficient evidence of a significant difference in the number of leisure hours. O D. There is a 90% probability that the difference of the means is in the interval. Conclude that there is a significant difference in the number of leisure hours. Click to select your answer and then click Check Answer. ? All parts showing Clear All Check AnswerMath 1401 Spring 2021 Powell Xiaoyu Ma & | 04/25/21 4:38 AM Homework: Section 11.3 - Inference 2 Means: Independent Save Score: 0.83 of 1 pt 9 of 9 (9 complete) HW Score: 84.63%, 7.62 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