A sleeping bag that should keep you warm in temperatures from 20degrees to 45degrees. What is the random sample price of x if it is approximately normal and the sample prices are 50, 105, 85, 105, 95,...

A sleeping bag that should keep you warm in temperatures from 20degrees to 45degrees. What is the random sample price of x if it is approximately normal and the sample prices are 50, 105, 85, 105, 95, 80, 65, 60, 35, 110, 110, 105,120,30,95,23,90,100,60,110,70. What is the 90% confidence interval? What is the sample mean price o f x and standard deviation of s.