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Of the 95 participants in a drug trial who were given a new experimental treatment for​...

Of the 95 participants in a drug trial who were given a new experimental treatment for​ arthritis, 57 showed improvement. Of the 95 participants given a placebo, 45 showed improvement. Construct a​ two-way table for these​ data, and then use a 0.05. significance level to test the claim that improvement is independent of whether the participant was given the drug or a placebo.

improvement

no improvement

Drug

57

38

Placebo

45

50
Math   Statistics-And-Probability   
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