ercise program were- nts (heartbeats per hether the program

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.3: Measures Of Spread
Problem 26PFA
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Question
7.03 Before and after measurements with respect to an exercise program were
taken on 8 subjects. It is assumed that the measurements (heartbeats per
minute) are normally distributed. We are interested in whether the program
decreased mean counts by at least 5.0 beats per minute.
Subject | 1
4
5
6
7
8
Before 73 81 55 62 69 71 85 52
After
70 73 49 51 59 64 79 48
(a) Write down an appropriate statistical model stating all assumptions and
introducing relevant notation. (b) Write down the null and alternative hy-
potheses. (c) Obtain the corresponding p-value and give a concluding state-
ment.
Transcribed Image Text:7.03 Before and after measurements with respect to an exercise program were taken on 8 subjects. It is assumed that the measurements (heartbeats per minute) are normally distributed. We are interested in whether the program decreased mean counts by at least 5.0 beats per minute. Subject | 1 4 5 6 7 8 Before 73 81 55 62 69 71 85 52 After 70 73 49 51 59 64 79 48 (a) Write down an appropriate statistical model stating all assumptions and introducing relevant notation. (b) Write down the null and alternative hy- potheses. (c) Obtain the corresponding p-value and give a concluding state- ment.
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