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BaLLatris [955]
3 years ago
8

The kingston review (kr) is testing a new gmat question. the kr wants to determine what proportion of test-takers will answer th

e question correctly, in order to assess its difficulty. in a random sample of 144 test-takers, 75% answered the question correctly. what is the 95% confidence interval for the proportion of test-takers answering the question correctly?
Mathematics
1 answer:
oksian1 [2.3K]3 years ago
7 0
[67.9 %, 82.1 %] is the 95% confidence interval for the proportion of test-takers answering the question correctly. So we have [67.9 %, 82.1 %] In a random sample of 144 test-takers with 75% answered the question correctly. So the answer in this question is [67.9 %, 82.1 %].
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