how much does a sleeping bag cost? lets say you want a sleeping bagthat should k
ID: 2919254 • Letter: H
Question
how much does a sleeping bag cost? lets say you want a sleeping bagthat should keep you warm in temperatures from 20 F to 45 F. arandom sample of prices ($) for sleeping bags in this temperaturerange was taken from backpacker magazine.80 90 100 120 75 37 30 23 100 110 105 95 105 60 110 120 95 9060 70
a.) use a calculator with mean and sample standard deviationkeys to verify that x (x bar) = $ 83.75 and s = $28.97
b.) using the given data as representative of the populationof prices of all summer sleeping bags, find a 90% (1.645)confidence interval for the mean price of all sleepingbags.
80 90 100 120 75 37 30 23 100 110 105 95 105 60 110 120 95 9060 70
a.) use a calculator with mean and sample standard deviationkeys to verify that x (x bar) = $ 83.75 and s = $28.97
b.) using the given data as representative of the populationof prices of all summer sleeping bags, find a 90% (1.645)confidence interval for the mean price of all sleepingbags.
Explanation / Answer
(b) The 90% CI is xbar±Z*s/n -->83.75±1.645*28.97/sqrt(20) -->( 73.09, 94.41)
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