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In Clinical trials of Liptor, 94 subjects were treated with Lipitor and 270 subjects were given...

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Statistics

In Clinical trials of Liptor, 94 subjects were treated withLipitor and 270 subjects were given the placebo. Among thosetreated with Lipitor, 7 developed infections. Among those given aplacebo, 27 developed infections. We want to use a 0.05significance level to test the claim that the rate of infectionswas the same for those treated with Lipitor and those given theplacebo.

a) test claim using a hypothesis test

c) based on results is the rate of infection different for thosetreated with Lipitor?

Please do it out with the equation below. I am trying tounderstand it by hand rather than excel or SPSS first.

--> This is the equation i used. Igot Z = -9.72 but i don't believe its right.

Answer & Explanation Solved by verified expert
3.9 Ratings (487 Votes)
i am denoting Lipitor by and placebo by 2given data and somenecessary calculations arethe pooledproportion beahypothesistest    See Answer
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