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A random sample of 41 car owners was taken to try to determine the mean length of car ownership for all owners. The sample resulted

A random sample of 41 car owners was taken to try to determine the mean length of car ownership for all owners. The sample resulted in a mean of 3.98 years and a standard deviation of 1.25 years. The data is normally distributed. Form a 95% confidence interval for the mean length of car ownership. The confidence interval would be 3.98 what margin of error?

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