Many elementary school students in a school district current

Many elementary school students in a school district currently have ear infections. A random sample of children in two different schools found that 15 of 44 at one school and 16 of 32 at the other have ear infections. At the 0.05 leval of significance, is There sufficient evidence to support the claim that a difference exists between the proportions of students who have ear infections at the two schools? Yes, because the test value -12.20 is outside the noncritical region-1.96

Solution

the required answer is (B)