Two random samples of students at a school are taken. Both groups are asked if they wish to continue their education by

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Two random samples of students at a school are taken. Both
groups are asked if they wish to continue their education by going
to college. A summary of the sample sizes and proportions of each
group answering
yes'' are given below:
n1=86, p^1=0.821
n2=93, p^2=0.594
Find a 95% confidence interval for the difference
p1−p2
of the proportions. Express your answer as an interval in the
form (a,b).