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Can you show the work too please? 12. A survey of a simple random sample of 140 dieters revealed that the numbers of times they

Can you show the work too please?

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12. A survey of a simple random sample of 140 dieters revealed that the numbers of times they "cheated" on their diets had a mean of 7.0 times per week. Construct and interpret a 99% confidence interval for the mean number of times dieters "cheat" on their diets each week. Assume that the population standard deviation is 1.5 times per week

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