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Does your experimental drug affect cholesterol you run a

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Does your experimental drug affect cholesterol? You run a study where the 15 subjects in group #1 receive the experimental drug and the 15 in group #2 receive a placebo. A t-test on your data yielded an observed value of 2.01.

a. What is the null hypothesis?

b. How many degrees of freedom are there?

c. Is this situtaion one tailed or two tailed? Explain.

d. What is the critical value of t?

e. Assuming an alpha level of .05, do you reject the null? Explain.

Reference no: EM13616916

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