Concept explainers
(a)
To clarify: the explanation is meaningless. Then create a right two-way table that displays the experiment outcomes.
(a)
Answer to Problem 48E
Independent requirement has been not met.
Explanation of Solution
Given:
In this table, 32 participants from the treatment are not given full details. Group and 23 of the observed experimental group. So, the use of Chi-square makes no sense. The above-mentioned table exam.
The below is the product of the two-way table from the previous experiment:
Treatment | Control | Total | |
After 1 month | 19 | 1 | 20 |
After 2 months | 6 | 2 | 8 |
After 2 months don't get rid of | 7 | 20 | 27 |
Total | 32 | 23 | 55 |
(b)
Explaining: the explanation why it is not acceptable to use the right two-way table with a chi-square test in that situation.
(b)
Answer to Problem 48E
Not proven to satisfy the random criterion.
Explanation of Solution
Given:
Formula used:
Calculation:
Expected count for any cell when
For the expected count
Treatment | Control | Total | |
After 1 month | 20 | ||
After 2 months | 8 | ||
After 2 months don't get rid of | 27 | ||
Total | 32 | 23 | 55 |
Since at least 5 are not all expectations. So, in this situation, a chi-square test should not be carried out.
Chapter 11 Solutions
The Practice of Statistics for AP - 4th Edition
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