Question

Kay scored above 90% on five of her math quizzes, 80% to 90% on fourteen of them, and 70% to 80% on two of them. What is the experimental probability of her scoring from 80% to 90% on her next math quiz?

P(80%-90%) =

Answer 1

P(80-90)=66.666666...% Or 0.666666...

Explanation:

Total tests = 21

Tests with 80-90 = 14

14 ÷ 21 = 2/3 which is 66.66666% or 0.66666