One of the major oil products companies conducted a study recently to estimate the mean gallons of gasoline purchased by customers per visit to a gasoline station. To do this, a random sample of customers was selected with the following data being recorded that show the gallons of gasoline purchased. Purchased 1 Purchased 2 ni = 50 n₂ = 80 G₁ = 34 0₂ = 40 x=355 x = 330 Construct a 95% confidence interval estimate for the difference between two population means.

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