## [answered] A random sample of the price of gasoline from 20gas station

A random sample of the price of gasoline from 20gas stations in a region gives the statistics below. Complete parts a) and b)

ybar =?\$3.59,?s =?\$0.24

a)Find a 95%?confidence interval for the mean price of regular gasoline in that region. __, __?(Round to three decimal places as needed.)

b) If we had the same statistics from a sample of 40?stations, what would the 95% confidence interval be now? __, __?(Round to three decimal places as needed.)

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This question was answered on: Sep 18, 2020

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