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A sample of 64 customers at Ted’s service station shows a mean number of gallons of...

A sample of 64 customers at Ted’s service station shows a mean number of gallons of gasoline purchased per customer to be 13.6 gallons. If σ is 3 gallons, what is the 95% confidence interval of the mean number of gallons purchased per customer?A sample of 64 customers at Ted’s service station shows a mean number of gallons of gasoline purchased per customer to be 13.6 gallons. If σ is 3 gallons, what is the 95% confidence interval of the mean number of gallons purchased per customer?

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