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Please solve and show work for each question 5. A study is conducted to assess the vitamin D levels of online MPH students. In the

Please solve and show work for each question

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5. A study is conducted to assess the vitamin D levels of online MPH students. In the study, 250 graduate students are randomly selected and the sample mean of vitamin D levels is 41 ng/mL and the sample standard deviation is 16.6 ng/mL. If you were calculating a 95% condence interval for the true mean of vitamin D, what would be the critical value? a. 1.970 b. 1.651 c. 3.302 d. 1.051 e. 1.675

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