Please help on 4 and 5

Question 4 Go/1 pt 9 10 99 @ Details You must estimate the mean temperature (in degrees Fahrenheit) with the following sample temperatures: 66.9 79.6 42.7 69.8 64.8 75.2 53.5 73.2 107.5 92.7 Find the 90% confidence interval. Enter your answer as an open-interval (i. e., parentheses) accurate to two decimal places (because the sample data are reported accurate to one decimal place). 90% C.I. = Answer should be obtained without any preliminary rounding. Question Help: Video Submit Question Question 5 0/1 pt 9 10 99 @ Details SAT scores are distributed with a mean of 1,500 and a standard deviation of 300. You are interested in estimating the average SAT score of first year students at your college. If you would like to limit the margin of error of your 95% confidence interval to 25 points, how many students should you sample? Make sure to give a whole number answer. Question Help: Video Submit