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Hypothesis Testing: Show ALL steps in your work. The average weight for the adult female population...

Hypothesis Testing: Show ALL steps in your work. The average weight for the adult female population is 195 with a standard deviation of 15. A researcher believes this value has changed. The researcher decides to test the weight of 75 random female adults. The average weight of the sample is 185. Is there enough evidence to suggest the average weight has changed? Use the level of significance of 0.05.

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