[Solution] A 95% confidence interval for the average miles per gallon for all cars of a given type is 32.1 plus/, minus 1.8. The interval is based on a sample
Question: A 95% confidence interval for the average miles per gallon for all cars of a given type is 32.1 plus/, minus 1.8. The interval is based on a sample size of 40 randomly selected cars.
What units represent the margin of error?
Suppose you want to decrease the margin of error but want to keep the 95% confidence
interval. What do you need to do?
Deliverable: Word Document 
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