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The council of higher education wants to compare the percentage of students that score A in...

The council of higher education wants to compare the percentage of students that score A in two universities. In a random sample of 50 students from university one, 16 received a grade of A; and in a random sample of 40 students from university two, 8 received a grade of A. The 95% confidence interval for the difference in the proportion of students who received a grade of A is:

a. -0.0638 to 0.3038

b. -0.0691 to 0.2983

c. 0.0365 to 0.04302

d. -0.0591 to 0.2991

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orchestra answered 2 years ago
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