Problem 3
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present a contingency table
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state the appropriate null and the alternative hypothesis
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for each test
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determine a critical value using
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present a test statistic
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present a p-value
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interpret the p-value
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state your decision
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state your conclusion
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In a study of 112 patients with acute brief episodes of psychoses, researchers classified subjects into four personality types: obsessiod, asthenic/low self-confident, asthenic/high self-confident, and nervous/tense. The table below crosses-classifies these personality types with three groups of subjects: those with acute and transient psychotic disorders (ATPD), those with “positive”schizophrenia (PS), and those with bipolar schizo-affective disorder (BSAD). Perform an appropriate test to determine if personality types and disorder groups are related.
|
Personality Type |
|||
|
Obsessoid (O) |
Asthenic/low Self-confident (A) |
Asthenic/high Self-confident (S) |
Nervous/tense (N) |
ATPD |
10 |
21 |
6 |
5 |
PS |
3 |
18 |
4 |
8 |
BSAD |
7 |
16 |
9 |
5 |