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An automobile manufacturer wishes to estimate the mean gasoline mileage of its new compact model. The standard deviation is known to be 1.5 mpg. How

An automobile manufacturer wishes to estimate the mean gasoline mileage of its new compact model. The standard deviation is known to be 1.5 mpg. How many sample runs must they take to be 95% certain that the error of estimation does not exceed 0.3 mpg?

Question 9 options:

At least 68 sample runs

At least 167 sample runs

At least 129 sample runs

At least 97 sample runs

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