(a)
To construct: The two way table of cardiac
(a)
Explanation of Solution
Calculation:
Given information:
Total number of people
Number of people in stress management program
Number of people suffered cardiac events in stress management program
Number of people in the exercise group
Number of people suffered cardiac events in the exercise group
Number of people in usual care
Number of people suffered cardiac events in usual care
Graph:
The two way table will be
Stress management | Exercise group | Usual care | Total | |
Suffered cardiac events | ||||
Did not suffered cardiac events | ||||
Total |
(b)
To find: The success rates of the three treatments.
(b)
Answer to Problem 3CRE
Stress management
Exercise program
Usual care
Explanation of Solution
Formula used:
Calculation:
Success rates
For stress management:
For exercise program:
For usual care:
(c)
To check: Whether there is any significant difference among the success rates for the three treatments or not.
(c)
Answer to Problem 3CRE
There is no significant difference among the success rates for the three treatments.
Explanation of Solution
Formula used:
The chi square statistic is
Calculation:
The expected count of the number of people can be calculated as follows
Stress management | Exercise group | Usual care | Total | |
Suffered cardiac events | ||||
Did not suffered cardiac events | ||||
Total |
The null and alternate hypotheses are
Test statistic
Under null hypothesis
The test value is
P value:
Conclusion:
As p value is greater than
Chapter 11 Solutions
The Practice of Statistics for AP - 4th Edition
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Statistical Reasoning for Everyday Life (5th Edition)
Elementary Statistics: Picturing the World (7th Edition)
Elementary Statistics (13th Edition)
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