A college basketball player makes 80% of his free throws. Over the course of the season, he will attempt 100 free throws. Assuming free-throw attempts are independent, what is the probability that he makes at least 90 of these attempts?
A)about 0.9
B)about 0.7
C)about 0.3
D)about 0.006

Question

Quizplus · Accepted Answer

The probability of making at least 90 out of 100 free throws, given a success rate of 80%, is very low. This is because the expected number of made free throws is 80 (80% of 100), and making 90 or more is significantly above expectation. Calculating the exact probability would typically involve using the binomial distribution formula or a normal approximation, both of which would yield a very small probability, much closer to 0.006 than to any of the other options provided.

A College Basketball Player Makes 80% of His Free Throws