Concept explainers
(a)
To Explain: the comparing the effectiveness of the three treatments and use percents and draw graph.
(a)
Explanation of Solution
Given:
Group | Treatment | Subjects | Success | Percent |
1 | Desipramine | 24 | 14 | 58.3 |
2 | Lithium | 24 | 6 | 25.0 |
3 | Placebo | 24 | 4 | 16.7 |
Calculation:
The percent of successes in each treatment group
Desipramine treatment | 58.3% |
Lithium treatment | 25.0% |
Placebo treatment | 16.7% |
Graph:
Bar Graph
It is observed that the Desipramine treatment looks to be too much more effective then the lithium and placebo, treatment because the proportion of successes is very much higher for the Desipramine treatment.
(b)
To construct: a two-way table that shows the relationship between treatment and success in staying off cocaine.
(b)
Explanation of Solution
Calculation:
Number of the subjects in the treatment will be the column totals
Success | Failure | Total | |
Desipramine | 14 | 10 | 24 |
Lithium | 6 | 18 | 24 |
Placebo | 4 | 20 | 24 |
Total | 24 | 48 | 72 |
A column with the number of failures should be added. The numbers of failures are the difference between the number of subjects and the number of successes.
Chapter 10 Solutions
Statistics Through Applications
Additional Math Textbook Solutions
Essentials of Statistics, Books a la Carte Edition (5th Edition)
Introductory Statistics (10th Edition)
Elementary Statistics: Picturing the World (6th Edition)
Introductory Statistics
Elementary Statistics: Picturing the World (7th Edition)
Statistical Reasoning for Everyday Life (5th Edition)
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