Question

A university financial aid office polled a random sample of 970 male undergraduate students and 870 female undergraduate students. Each of the students was asked whether or not they were employed during the previous summer. 670 of the male students and 443 of the female students said that they had worked during the previous summer. Give a 99% confidence interval for the difference between the proportions of male and female students who were employed during the summer.

Step 1 of 4 :  

Find the values of the two sample proportions, pˆ1p^1 and pˆ2p^2. Round your answers to three decimal places.

Step 2 of 4:

Find the critical value that should be used in constructing the confidence interval.

3 Find the value of the standard error round your answer to three decimal places

4 99% confidence interval lower and upper

Answer 1

value of standard error is 0.023

upper limit of confidence interval is 0.24

lower limit is 0.123.

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