Question

3) The effectiveness of a headache medicine is tested by measuring the intensity of a
headache in patients before and after drug treatment. The data consist of before and after
intensities for each patient. (Circle one)
a) Two Independent Samples b) Matched Paired Data
4) The effectiveness of a new headache medicine is tested by measuring the average amount
of time until a headache is cured for subjects who use the medicine and comparing that to the
average amount of time until a headache is cured for another group of patients who use a
placebo drug. (Circle one)
a) Two Independent Samples b) Matched Paired Data

Answer 1

(3) it is given that the effectiveness of a headache medicine is tested by measuring the intensity of a
headache in patients before and after drug treatment

So, it is clear that the sample data is used to take before and after measurement, i.e. we have dependent sample

so, it is a matched paired data or dependent data

option B

(4) it is given that the effectiveness of a new headache medicine is tested by measuring the average amount
of time until a headache is cured for subjects who use the medicine and comparing that to the
average amount of time until a headache is cured for another group of patients who use a
placebo drug

So, it is clear that the sample data is independent because two sets of people are used for new medicine and placebo

So, we have two indendent data samples

option A