(Answered) New car owners are currently keeping their cars for an

Statistics

New car owners are currently keeping their cars for an average (mean) of 6.5 years with a standard deviation of 2.4 years. You have sampled 39 owners of new Mercedes Benz and found a mean length of ownership of 7.1 years. How do I Test to determine if Mercedes' owners hold onto their car longer than the average for all brands using α = 0.01 and the prob-value approach?

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