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 67 4.4 3.1 0.379 (3. 643, 5.157) 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. B. No, because 7 is within the 95% confidence interval given in the software results. O C. Yes, because 7 is well outside the 95% confidence interval given in the software results. D. No, because 7 is well outside the 95% confidence interval given in the software results. b. Suppose that the sample size had been 240, with x = 4.4 and s = 3.1. 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.)