Question 8 (10 points) () Listen Suppose a phone manufacturer wants to estimate the mean talk time for its newest phone before the battery must be recharged. In a random sample of 35 phones, the sample mean talk time was 375 minutes. Construct a 90% confidence interval for the population mean talk time for this phone assuming that o = 32 minutes. (364.51, 385.49) (366.1, 383.9) (365.85, 384.15) (364.82, 385.18 tion 9 (6 points) Listen mple of size 33 is drawn from a normally distributed population. If we want to truct a 98% confidence interval to estimate the population mean given a