A random sample of $n_1$ = 238 people who live in a city were selected and 100 identified as a student. A
random sample of $n_2$ = 99 people who live in a rural area were selected and 68 identified as a student.
Find the 99% confidence interval for the difference in the proportion of people that live in a city who
identify as a student and the proportion of people that live in a rural area who identify as a student.
Round answers to 2 decimal places, use interval notation with parentheses (,)