How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20 degrees Fahrenheit to 45 degrees Fahrenheit. 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. 60 65 80 120 110 115 30 23 100 110 105 95 105 60 110 120 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
How much does a sleeping bag cost? Let's say you want a sleeping bag that should keep you warm in temperatures from 20 degrees Fahrenheit to 45 degrees Fahrenheit. A random sample of prices ($) for sleeping bags in this temperature
60 65 80 120 110 115 30 23 100 110
105 95 105 60 110 120 95 90 60 70
A.use a calculator with
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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