Concept explainers
To explain: The invalidness of the result.
Explanation of Solution
Given information:
The observed number of counts in four tries is as follows
Correct answers | |||||
Knowledgeable teacher | |||||
Ignorant teacher |
Concept used:
For chi square test to be used, in each cell the expected count should be more than or equal to
Formula used:
Expected count =
Calculation:
The expected count will be
Correct answers | ||||||
Total | ||||||
Knowledgeable teacher | ||||||
Ignorant teacher | ||||||
Total |
Using the concept aforementioned, there are
Hence, the result isn’t valid because chi square can’t be used.
Chapter 11 Solutions
The Practice of Statistics for AP - 4th Edition
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