A publisher wants to estimate the mean length of time (in minutes) all adults spend reading newspapers. To determine this estimate, the publisher takes a random sample of 15 people and obtains the results below. From past studies, the publisher assumes is 2.2 minutes and that the population of times is normally distributed. 12 7 11 9 8 8 112 10 6 7 11 7 12 11 10 Construct the 90% and 99% confidence intervals for the population mean. Which interval is wider? If convenient, use technology to construct the confidence intervals. The 90% confidence interval is (). (Round to one decimal place as needed.) The 99% confidence interval is (). (Round to one decimal place as needed.) Which interval is wider? The 90% confidence interval O The 99% confidence interval