Probability Checkpoint 2.docx - Probability Checkpoint 2 Step 1 of 1 Question 1 of 11 Points 0 out of 10 A fair die is rolled 12 times Consider the

# Probability Checkpoint 2.docx - Probability Checkpoint 2...

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Probability Checkpoint 2 Step 1 of 1 Question 1 of 11 Points: 0 out of 10A fair die is rolled 12 times. Consider the following three possible outcomes:(i) 2 2 2 2 2 2 2 2 2 2 2 2(ii) 1 1 2 2 3 3 4 4 5 5 6 6(iii)4 6 2 1 3 5 2 6 4 3 1 5Which of the following is true? It is absolutely impossibleto get sequence (i). (ii) is more likely than (i). (iii) is more likely than (i) or (ii). The three outcomes are equally likely. Both (B) and (C) are true. This is not quite right. The die is fair. This means that all faces have an equal probability of occurring on any given roll (1/6). Since each roll is independent of the other rolls, think about the other choices. (D) is the correct answer. Question 2 of 11 Points: 10 out of 10Let A and B be two disjointevents such that P(A) = .20 and P(B) = .70. What is P(A and B)?
Question 3 of 11 Points: 10 out of 10The following probabilities are based on data collected from U.S. adults during the National Health Interview Survey 2005-2007. Individuals are placed into a weight category based on weight, height, gender and age. UnderweightHealthy WeightOverweight (not obese)ObeseProbability0.0190.3770.350.254Based on these data, what is the probability that a randomly selected U.S. adult weighs more than a healthy weight?