Question

ed's exam score was 2.17 standard deviations above the mean. the exam was taken by 200 students. assuming a normal distribution, how many scores were higher than ed's?

Answer 1

3 students

Explanation:

P(Z<2.17) = 0.985

P(Z>2.17) = 1 - 0.985

= 0.015

total scores higher than ed's:

0.015 × 200

= 3 students