A study is done to see if vitamin C decreases your chance of getting colds. In...

A study is done to see if vitamin C decreases your chance of getting colds. In a double-blind experiment, in a random sample of 200 adults, 100 are assigned to an "experimental group" (take vitamin C) and 100 are assigned to a "control group" (take a placebo). The subjects in the study are the following results: In the experimental group, 10 get cold. In the control group, 20 get colds. Testing at a significance level a= .01, find:

a. H_0, H_a

b. p̂_1, p̂₂

c. pooled p̂

d. Z- Value

e. P- Value

f. Conclusion (Are the results statistically significant?)

e. Conclusion (reject H₀ or do not reject H₀ )

Expert Solution

orchestra answered 2 years ago

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