The Table Below Summarizes Results from an Experiment in Which

question 51

Multiple Choice

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?

• A) Only nondiabetic/nondiabetic
• B) diabetic/nondiabetic and nondiabetic/diabetic
• C) nondiabetic/nondiabetic and diabetic/diabetic
• D) Only diabetic/nondiabetic

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Definitions:

Null Hypothesis

In statistics, it posits that there is no effect or difference among the groups being studied or variables being compared.

Alpha

In hypothesis testing, alpha level represents the threshold for rejecting the null hypothesis, often set at 0.05 or 5% risk of Type I error.

T-statistic

A statistic calculated from a dataset to compare the mean of the data to a hypothetical mean as part of a t-test.

Critical Value

The boundary value from a statistical distribution where, if the observed test statistic is beyond this point, the null hypothesis is rejected.