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Combinations of before treatment

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1. The table below summarizes results from an experiment in which subjects were classified as diabetic or nondiabetic and then given a treatment. After the treatment, they were again classified as diabetic or nondiabetic. Which combinations of before treatment/after treatment categories will yield discordant pairs?

Before Treatment

Diabetic Nondiabetic

After Treatment Diabetic 9 6

Nondiabetic 22 12

A. Only diabetic/nondiabetic

B. Nondiabetic/nondiabetic and diabetic/diabetic

C. Diabetic/nondiabetic and nondiabetic/diabetic

D. Only nondiabetic/nondiabetic

2. The table below summarizes results from an experiment in which subjects were classified as asthmatic or nonasthmatic and then given a treatment. After the treatment, they were again classified as asthmatic or nonasthmatic. How many subjects were included in the experiment?

Before Treatment

Asthmathic Nonasthmatic

After Treatment Asthmathic 9 2

Nonasthmatic 15 6

A. 15
B. 32
C. 8
D. 24

Reference no: EM13894827

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