mathxl.com E E Grades for Macy Begnoche: STA261 H A Do Homework - Macy Begnoche MyStatLab Data Set Course Hero STA261 H A Macy Begnoche | 10/15/20 5:31 PM Homework: Chap 8 HW Save Score: 0 of 4 pts 18 of 22 (16 complete) HW Score: 53.73%, 48.89 of 91 pts Instructor-created question Question Help For a certain survey, software reports the results shown below for responses on the number of times a week the subject reads a newspaper. Complete parts a through d. Variable N Mean Std Dev SE Mean 95. 08 CI News 4.1 3.3 0. 394 (3 . 314, 4.886) a. Is it plausible that u =7, where u is the population mean for all respondents? Explain. O A. Yes, because 7 is within the 95% confidence interval given in the software results. O B. Yes, because 7 is well outside the 95% confidence interval given in the software results. O C. No, because 7 is well outside the 95% confidence interval given in the software results. O D. No, because 7 is within the 95% confidence interval given in the software results. b. Suppose that the sample size had been 240, with x = 4.1 and s = 3.3. Use technology to find a 95% confidence interval. Describe the effect of sample size on the margin of error. The 95% confidence interval is ( D). Round to one decimal place as needed.) Compare the confidence interval found in the previous step to the one reported. What effect does sample size have on the margin of error? O A. As sample size increases, the margin of error becomes smaller. O B. As sample size increases, the margin of error does not change. O C. As sample size increases, the margin of error becomes larger. Click to select your answer(s) and then click Check Answer. ? All parts showing Clear All Check