A random sample of the price of gasoline from 40 gas stations in a region gives the statistics below. Complete parts a)
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A random sample of the price of gasoline from 40 gas stations in a region gives the statistics below. Complete parts a)
A random sample of the price of gasoline from 40 gas stations in a region gives the statistics below. Complete parts a) through c). y = $3.69, 8 = $0.26 a) Find a 95% confidence interval for the mean price of regular gasoline in that region (3.607.3.773) (Round to three decimal places as needed.) b) Find the 90% confidence interval for the mean (3.987 3.393) (Round to three decimal places as needed.)
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