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You are running a trial for an experimental diabetic drug. Subjects were divided randomly into a treatment group and placebo control group. After taking the

  • You are running a trial for an experimental diabetic drug. Subjects were divided randomly into a treatment group and

placebo control group.

After taking the drug for 60 days, the following results were obtained.

Observed Data
None Mild Moderate Severe
Treatment 56 76 43 89
Placebo 17 22 23 54

I need to know the following value with regular values and in excel

Expected Values
None Mild Moderate Severe
Treatment
Placebo
What should be the appropriate null and alternative hypotheses for this study.
Null:
Alternative:

What is the Chi-square test for independence, using the "=chisq.test()" function that was

introduced in the previous tab to obtain a P-value . what if I need to do in excel

Please note that you do not have to input the degrees of freedom as you do with the "=t.test()" function

because for chi-square, df = (Rows -1)(Columns -1)

P =

Do I should reject the null hypothesis at the level of alpha = 0.05? Why and why not

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