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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

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 40stations, what would the 95% confidence interval be now? __, __(Round to three decimal places as needed.)

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