l HW Score: 41.64%, 33.31 of Question 13, 3.2.21 80 points 0 Points: 0 of 3 A research group wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of E = 0.30 hour is desired. Past studies suggest that a population standard deviation of a = 2.3 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with 95% condence. The required sample size is D. [Round up to the nearest whole number.)