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In each of the following scenarios, determine whether the data is paired or not paired. Part...

In each of the following scenarios, determine whether the data is paired or not paired.

Part A: Compare pre- (beginning of semester) and post-test (end of semester) scores of students.

Part B: Assess gender-related salary gap by comparing salaries of randomly sampled men and women.

Part C: Compare artery thicknesses at the beginning of a study and after 2 years of taking Vitamin E for the same group of patients.

Part D: Assess effectiveness of a diet regimen by comparing the before and after weights of subjects.

math   Statistics-And-Probability   
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Answer #1

Part pafned data Part Bi not a paired data Partct Paired dal PrtDs Paired daf

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Answer #2

) data are taken from independent samples so we use difference of means test.

paired data is taken for same sample element and thus we use paired t- test .

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