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A researcher wants to know how effective a diet pill is. They expect an effect of 3 pounds loss after 15 weeks of using the

A researcher wants to know how effective a diet pill is. They expect an effect of 3 pounds loss after 15 weeks of using the pill. In the population, the mean weight is = 195.5 pounds, = 42.0.

What is the power of the hypothesis test for a sample n = 150?:

What is the power of the hypothesis test for a sample n = 2,500?

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