MY NOTES PRACTICE ANOTHER How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20F to 45. A random sample of prices (6) for sleeping bags in this temperature range is given below. Assume that the population of x values has an approximately normal distribution 75 115 50 115 70 BO 30 23100110 105 95 TOS 50 110 120 95 90 60 (a) se calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation (Round your answers to four decimal place) ( in the given data as representative of the population of prices of all summer sleeping bags find a 90% confidence interval for the mean price of all eping bags (Hound your answers to two decimal places) wer Unit upper limit