(a)
To find:
The study provides evidence that among men with a neurodegenerative disorder for the given data.
(a)
Answer to Problem 22.11AYK
Explanation of Solution
Given:
Participated in a contact sport
None of the control men
Concept used:
Formula
Significance level
Calculation:
Parameter
The best point of estimate of
Since the sample size are large.
The condition for the two samples
The population distribution is normal.
Draw the first table
CTEContact sportsNoContact sports Total
Observed | |||
Expected | |||
Draw the second table
No CTEContact sportsNoContact sports Total
Observed | |||
Expected | |||
Draw the third table
TotalContact sportsNoContact sports Total
Observed | |||
Expected | |||
Test statistic
The null hypothesis
(b)
To explain:
The chi-square test is nevertheless appropriate for the given data.
(b)
Explanation of Solution
Given:
Participated in a contact sport
None of the control men
Concept used:
Formula
Significance level
Calculation:
Parameter
The best point of estimate of
Since the sample size are large.
The condition for the two samples
The population distribution is normal.
Draw the first table
CTEContact sportsNoContact sports Total
Observed | |||
Expected | |||
Draw the second table
No CTEContact sportsNoContact sports Total
Observed | |||
Expected | |||
Draw the third table
TotalContact sportsNoContact sports Total
Observed | |||
Expected | |||
Test statistic
The null hypothesis
Significance level
Since
So the hypothesis is fail to reject null hypothesis
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Chapter 22 Solutions
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