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How much does a sleeping bag cost Let s say you want a sleeping bag...

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How much does a sleeping bag cost Let s say you want a sleeping bag that should keep you warm in temperatures from 20 F to 45 F A random sample of prices for sleeping bags in this temperature range is given below Assume that the population of x values has an approximately normal distribution 75 105 95 60 100 75 USE SALT 90 95 105 60 110 120 30 23 100 110 95 90 60 70 a Use a calculator with mean and sample standard deviation keys to find the sample mean price x and sample standard deviation s Round your answers to four decimal places X S b Using 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 summer sleeping bags Round your answers to two decimal places lower limit upper limit

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