AP Statistics: Unit 2: Probability, Random Variables, and Probability Distributions

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Question 3 · Unit 2: Probability, Random Variables, and Probability Distributions · standard

Each of four independent sensors detects a signal with probability 0.80. What is the probability that exactly three detect it?A. 0.1024B. 0.4096C. 0.5120D. 0.8192

Question 4 · Unit 2: Probability, Random Variables, and Probability Distributions · foundation

Of 60 club members, 24 cycle to meetings. Of those 24 cyclists, 18 wear helmets. One member is selected uniformly at random. Given that the selected member cycles, what is the probability they wear a helmet?A. 0.30B. 0.40C. 0.75D. 0.90

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