Lectures - 3.5 Bernoulli Trials

Quiz 3.5 #1

Jimmy has a 70% chance of making a free throw.
He shoots 6 of them.
What’s the probability that he makes exactly 4 shots?

  • A. C(4,6)(0.7)^4 (0.3)^2
  • B. C(6,4)(0.7)^4 (0.3)^2
  • C. C(6,4)(0.3)^4 (0.7)^2

Quiz 3.5 #2

You didn’t study for your finite test and you know zippo about anything.
Your exam has 10 multiple choice questions, each with 4 choices.
You guessed on all of them.
What’s the probability you get 90% or above?

  • A. 1-C(10,9)(0.75)^9(0.25)+C(10,10)(0.75)^10
  • B. C(10,9)(0.75)^9 (0.25)+C(10,10)(0.75)^10
  • C. C(10,9)(0.25)^9 (0.75)+C(10,10)(0.25)^10