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14 Dec 2021
Problem 3
Page 555
Section: PRACTICE
Chapter 10: HYPOTHESIS TESTING WITH TWO SAMPLE
Textbook ExpertVerified Tutor
14 Dec 2021
Given information
A new windshield treatment claims to repel water more effectively. Ten windshields are tested by simulating rain without the new treatment. The same windshields are then treated, and the experiment is run again. A hypothesis test is conducted.
Step-by-step explanation
Step 1.
Assuming the difference of the means with and without new treatment sample difference is 
. Then,
The null hypothesis is as follows:
The alternative hypothesis is given as:
Therefore, this hypothesis test is for matching or paired test.
Therefore, option 
.
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Introductory Statistics
OER Edition, 2013
Openstax
ISBN: 9781938168208
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