An automobile mileage study tested the following hypotheses

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Reference no: EM13603094

An automobile mileage study tested the following hypotheses.

Hypothesis:

H0:u>(or equal to) 25 mpg

Conclusion:

Manufacturer's claim supported

Hypothesis:

Ha: u < 25 mpg

Conclusion:

Manufacturer's claim rejected; average mileage per gallon less than stated

For o~ = 3 and a .02 level of significance, what sample size would be recommended if the researcher wants 80% chance of detecting that u is less than 25 miles per gallon when it is actually 24?

Reference no: EM13603094

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