Each car in the United States must publish their fuel efficiency (mpg). Suppose that Subaru sold 125,000 Outback’s in 2018. And suppose the published mileage requires a 98% confidence level with a margin of error of 1 mile per gallon. Subaru wants to cut costs, so they request only needing a 95% confidence level.
Would they need to sample more cars or fewer cars than if they used a 98% confidence level?
A) Not enough information to determine
B) More Cars
C) Fewer cars
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