Engineering Board Exam Reviewer · Binomial Distribution · medium

A basketball player makes 80% of free throws. In 5 attempts, what is the probability of making at least 4?

  1. 0.4096
  2. 0.3277
  3. 0.7373
  4. 0.2627

Answer

C. 0.7373

Solution

P(X≥4)=P(4)+P(5)= 54(0.8)4(0.2)+(0.8)5=0.4096+0.32768=0.7373.

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