A group of 9 concertgoers was selected at random. Before the concert they were given a hearing test, and then given another one after the concert. (The volume varied during the test, and the subject also had to state which ear the sound was in.) Here are the number of correctly identified sounds out of 10, both before and after theconcert. At the 0.05 level of significance, test a person’s hearing is worse after being affected by the noise of a concert. Person A B C D E F G H I Before 9 10 9 8 8 9 9 9 8 After 8 8 9 6 6 7 10 8 5
A group of 9 concertgoers was selected at random. Before the concert they were given a hearing test, and then given another one after the concert. (The volume varied during the test, and the subject also had to state which ear the sound was in.) Here are the number of correctly identified sounds out of 10, both before and after theconcert. At the 0.05 level of significance, test a person’s hearing is worse after being affected by the noise of a concert. Person A B C D E F G H I Before 9 10 9 8 8 9 9 9 8 After 8 8 9 6 6 7 10 8 5
Holt Mcdougal Larson Pre-algebra: Student Edition 2012
1st Edition
ISBN:9780547587776
Author:HOLT MCDOUGAL
Publisher:HOLT MCDOUGAL
Chapter11: Data Analysis And Probability
Section: Chapter Questions
Problem 8CR
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A group of 9 concertgoers was selected at random. Before the concert they were given a hearing test, and then given another one after the concert. (The volume varied during the test, and the subject also had to state which ear the sound was in.) Here are the number of correctly identified sounds out of 10, both before and after theconcert.
At the 0.05 level of significance, test a person’s hearing is worse after being affected by the noise of a concert.
|
Person |
A |
B |
C |
D |
E |
F |
G |
H |
I |
|
Before |
9 |
10 |
9 |
8 |
8 |
9 |
9 |
9 |
8 |
|
After |
8 |
8 |
9 |
6 |
6 |
7 |
10 |
8 |
5 |
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