Giving a test to a group of students, the grades and gender are summarized below   A B C Total Male 9 7 5 21 Female 3 4 15 22 Total 12 11 20 43 Let p represent the population proportion of all male students who received a grade of B on this test. Use a 85% confidence interval to estimate p to four decimal places if possible.

MATLAB: An Introduction with Applications
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Chapter1: Starting With Matlab
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Giving a test to a group of students, the grades and gender are summarized below

  A B C Total
Male 9 7 5 21
Female 3 4 15 22
Total 12 11 20 43

Let p represent the population proportion of all male students who received a grade of B on this test. Use a 85% confidence interval to estimate p to four decimal places if possible.

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