For a simple random sample of 40 particular brand vehicles, the mean gas mileage was 20 miles

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For a simple random sample of 40 particular brand vehicles, the mean gas mileage was 20 miles per gallon with the (sample) standard deviation of 1.5 miles per gallon.

a. determine the best point estimate for the population mean

b. 99% confidence interval was found for the mean gas mileage which is: 19 mpg < < 21 mpg.

Is it possible that the population mean gas mileage is greater than 23 miles per gallon? Explain.

Posted Date: May 18, 2024 04:11 AM

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For a simple random sample of 40 particular brand vehicles, the mean gas mileage was 20 miles

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