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Example of two tailed test

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Provide an example of a situation from your professional experience where an independent two-sample test of hypothesis would be useful in the decision-making process. How would the hypothesis statement read?

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Example of professional experience where two sample test is used.

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I am a dietitian. I wish to check if a particular diet has same effect on both men and women
In my study, men and women were given the same diet and the mean weight gained was tested.

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