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A powder diet is tested on 49 people, and a liquid diet is tested on 36...

A powder diet is tested on 49 people, and a liquid diet is tested on 36 different people. The population standard deviations are two pounds and three pounds, espectively. Of interest is whether the liquid diet yields a different mean weight loss than the powder diet. (4 points)

a. What formula would you use to solve this problem?

b. State the null and alternative hypotheses:

Math   Statistics-And-Probability   
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