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Q. 10

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Introductory Statistics
Found in: Page 596
Introductory Statistics

Introductory Statistics

Book edition OER 2018
Author(s) Barbara Illowsky, Susan Dean
Pages 902 pages
ISBN 9781938168208

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Short Answer

A new medicine is said to help improve sleep. Eight subjects are picked at random and given the medicine. The means

hours slept for each person were recorded before starting the medication and after.

The test is for paired or matching samples.

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Step by Step Solution

TABLE OF CONTENTS :
TABLE OF CONTENTS

Step 1: Given information

Eight people were chosen at random and given drugs to help them sleep better. The average sleep hours for each person are recorded before and after they get drugs.

Step 2: To identify the most appropriate hypothesis test for the supplied data.

Assuming a mean difference in sleeping hours before and after drug administration as μ

The null and alternative hypotheses are stated as follows:

H0:μ=0Ha:μ≠0

This shows that this hypothesis test is for matching or paired test.

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In words, define the random variable of interest for this test.
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