Question 1) Find the minimum sample size n needed to estimate u for the given values of c, o, and E. C=0.98, 6 =7.3, and E = 1 Assume that a preliminary sample has at least 30 members. n=(Round up to the nearest whole number.) Question 2) You are given the sample mean and the population standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Interpret the results and compare the widths of the confidence intervals. From a random sample of 67 dates, the mean record high daily temperature in a certain city has a mean of 85.62 F. Assume the population standard deviation is 14.35 F. The 90% confidence interval is (). (Round to two decimal places as needed.) The 95% confidence interval is (). (Round to two decimal places as needed.) Which interval is wider? Choose the correct answer below. The 95% confidence interval The 90% confidence interval Interpret the results. O A. You can be 90% confident that the population mean record high temperature is between the bounds of the 90% confidence interval, and 95% confident for the 95% interval. O B. You can be certain that the mean record high temperature was within the 90% confidence interval for approximately 60 of the 67 days, and was within the 95% confidence interval for approximately 64 of the 67 days. O C. You can be certain that the population mean record high temperature is either between the lower bounds of the 90% and 95% confidence intervals or the upper bounds of the 90% and 95% confidence intervals. O D. You can be 90% confident that the population mean record high temperature is outside the bounds of the 90% confidence interval, and 95% confident for the 95% interval