Concept explainers
a)
To find the rate of non-response.
a)
Answer to Problem 31E
The rate of non-response is 89.06%
Explanation of Solution
Given:
Total number of calls = 45,956
Number of responded = 5029
First need to find number of not responded calls.
Not responded = Total number of calls- Number of responded.
Not responded = 45,956 − 5029 = 40927
Therefore, the rate of non-response is,
b)
To explain the bias in the survey due to non-response.
b)
Answer to Problem 31E
Underestimation bias.
Explanation of Solution
Given:
Total number of calls = 45,956
Number of responded = 5029
The rate of non-response is 89.06%
The survey used a residential telephone. Therefore, there might be a lot of people who are out of home for a work. That people not being used for a sample which makes under estimation bias.
Chapter 4 Solutions
The Practice of Statistics for AP - 4th Edition
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