Research Scenario: A substance abuse counselor wants to demonstrate the effect of situational stress on alcohol cravings. He recruits two groups of men who are similar in respect to the history of alcohol use and demographic variables. He divides these participants into two groups. In one group (n=11), the men are exposed to a stressful situation and then asked to complete a measure rating their alcohol cravings on a scale from 0-10, where 0 represents no cravings and 10 represents intense cravings. In the second group (n = 10), the men are exposed to a neutral situation and asked to complete the same measure. The data are contained in the table below. Does a stressful situation result in more intense alcohol cravings than a non-stressful situation?Stressful Situation Neutral Situation Stressful Situation Neutral Situation 5 3 7 8 7 2 4 3 8 1 6 6 3 2 9 8 6 9 6 3
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Research Scenario: A substance abuse counselor wants to demonstrate the effect of situational stress on alcohol cravings. He recruits two groups of men who are similar in respect to the history of alcohol use and demographic variables. He divides these participants into two groups. In one group (n=11), the men are exposed to a stressful situation and then asked to complete a measure rating their alcohol cravings on a scale from 0-10, where 0 represents no cravings and 10 represents intense cravings. In the second group (n = 10), the men are exposed to a neutral situation and asked to complete the same measure. The data are contained in the table below. Does a stressful situation result in more intense alcohol cravings than a non-stressful situation?Stressful Situation Neutral Situation
|
Stressful Situation |
Neutral Situation |
|
5 |
3 |
|
7 |
8 |
|
7 |
2 |
|
4 |
3 |
|
8 |
1 |
|
6 |
6 |
|
3 |
2 |
|
9 |
8 |
|
6 |
9 |
|
6 |
3 |
|
8 |
|
Step by step
Solved in 3 steps with 1 images
