Question
In: Statistics and Probability
A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table...
A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table lists the observed frequencies in the small sample of people who use drugs.
| Obs. Freq. | Relapse | |||
|---|---|---|---|---|
| Yes | No | |||
| Cravings | Yes | 21 | 13 | 34 |
| No | 6 | 16 | 22 | |
| 27 | 29 | N = 56 | ||
(a) Conduct a chi-square test for independence at a 0.05 level
of significance. (Round your answer to two decimal places.)
=
(b) Compute effect size using ϕ and Cramer's V. Hint: Both should give the same estimate of effect size. (If necessary, round your intermediate steps to two or more decimal places. Round your answers to two decimal places.)
| ϕ | = | |
| V | = |
Solutions
orchestra answered 2 years agoRelated Solutions
A psychologist studying addiction tests whether cravings for cocaine and relapse are independent. The following table...
A psychologist studying addiction tests whether cravings for
cocaine and relapse are independent. The following table lists the
observed frequencies in the small sample of people who use
drugs.
Obs. Freq.
Relapse
Yes
No
Cravings
Yes
21
10
31
No
7
18
25
28
28
N = 56
(a) Conduct a chi-square test for independence at a 0.05 level
of significance. (Round your answer to two decimal places.)
=
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in each of these independent situations please decide whether
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