Some Clinical Psychologists believe that there may be arelationship between personality fype & vulnerability to heart attack. Specifically, they believe that TYPE A personality individuals might suffer more heart attacks than TYPĖ B personality individuals. We select 80 individuals at random & give them a personality test to determine if they are Type A or B. Then, we record how many Type A's & how many Type B's have & have not had heart attacks. We can display the observed frequencies in a contingency table: Personality Type Heart Attack Status Туре А Туре В Heart Attack 25 10 No Heart Attack 40
Some Clinical Psychologists believe that there may be arelationship between personality fype & vulnerability to heart attack. Specifically, they believe that TYPE A personality individuals might suffer more heart attacks than TYPĖ B personality individuals. We select 80 individuals at random & give them a personality test to determine if they are Type A or B. Then, we record how many Type A's & how many Type B's have & have not had heart attacks. We can display the observed frequencies in a contingency table: Personality Type Heart Attack Status Туре А Туре В Heart Attack 25 10 No Heart Attack 40
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
Set up the null and alternative hypothesis
Ho:
Ha:
What are the degrees of freedom?
Calculate the chi square statistic. ( Round to two decimal places)
Find the p-value. (Round to 8 decimal places).
Do we reject or fail to reject the null hypothesis?

Transcribed Image Text:Some Clinical Psychologists believe that there may be arelationship between personality type
& vulnerability to heart attack. Specifically, they believe that TYPE A personality individuals
might suffer more heart attacks than TYPĖ B personality individuals. We select 80
individuals at random & give them a personality test to determine if they are Type A or B.
Then, we record how many Type A's & how many Type B's have & have not had heart attacks.
We can display the observed frequencies in a contingency table:
Personality Type
Heart Attack
Status
Туре А
Туре В
Heart Attack
25
10
No Heart Attack
40
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