Giving a test to a large group of students, the grades and class from a small sample are summarized below B C Total 42 36 78 A 1st year students 19 10 13 2nd year students 14 15 7 Total 33 25 20 Let p represent the percentage of ONLY 2nd year students students who would score a grade of C on this test. Use a 90% confidence interval to estimate p to three decimal places.

MATLAB: An Introduction with Applications
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Author:Amos Gilat
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Chapter1: Starting With Matlab
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Don't understand how to find the confidence interval 

Giving a test to a large group of students, the
grades and class from a small sample are
summarized below
B C Total
42
36
78
A
1st year students
19 10 13
2nd year students 14 15 7
Total 33
25 20
Let p represent the percentage of ONLY 2nd
year students students who would score a
grade of C on this test. Use a 90%
confidence interval to estimate p to three
decimal places.
Enter your answer as an inequality using
decimals (not percents).
OB
o <p<
Transcribed Image Text:Giving a test to a large group of students, the grades and class from a small sample are summarized below B C Total 42 36 78 A 1st year students 19 10 13 2nd year students 14 15 7 Total 33 25 20 Let p represent the percentage of ONLY 2nd year students students who would score a grade of C on this test. Use a 90% confidence interval to estimate p to three decimal places. Enter your answer as an inequality using decimals (not percents). OB o <p<
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