Concept explainers
To find: the margin of error on the basis of given information for this confidence interval.
Answer to Problem 4PT4
0.037
Explanation of Solution
Given:
The confidence interval
(0.183, 0.257)
Calculation:
Note that the interval of confidence for proportions takes the form to the left, it can use this to search for margin of error. Take the second value and deduct the first value, and the shape on the left. To calculate for a margin of error, it can take the second confidence interval value, subtract the first value, then divide by 2
Hence, the correct option is (a)
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