According to the American Automobile Association (AAA), the average cost of a gallon of regular unleaded fuel
Question:
a. Calculate (x̅ and (x.
b. What is the approximate probability that the sample has a mean fuel cost between $3.65 and $3.67?
c. What is the approximate probability that the sample has a mean fuel cost that exceeds $3.67?
d. How would the sampling distribution of x change if the sample size n were doubled from 100 to 200? How do your answers to parts b and c change when the sample size is doubled?
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a m x m 365 b Using Table II AppendixB c Using Table II Appendix B d ...View the full answer
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