Question in description

Question

In 2016, more than 200,000 students took the AP® Statistics exam. Of these students, 14% earned the highest score of 5. Find the probability that, in a random sample of 300 students who took the 2016 AP® Statistics exam, 15% or more scored a 5. Use statistics to explain and justify your response.

Answer 1

z = (phat - p)/sqrt(p*(1-p)/n)

where phat = 0.15, p = 0.14, n = 300

compute z using above formula and look up P(z >= computed z)