100%(2)2 out of 2 people found this document helpful
This preview shows page 1 - 3 out of 5 pages.
Probability Checkpoint 2Step 1 of 1Question 1 of 11A fair die is rolled 12 times. Consider the following three possible outcomes:(i) 2 2 2 2 2 2 2 2 2 2 2 (ii)1 1 2 2 3 3 4 4 5 5 6 (iii) 4 6 2 1 3 5 2 6 4 3 1 5 Which of the following is true?2 6 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. Good job! 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, the probability of the each of the three sequences shown is the same, (1/6)12. So the three sequences are equally likely (or we could say equally unlikelysince each has such a small chance of occurring).Question 2 of 11Let A and B be two disjointevents such that P(A) = .30 and P(B) = .60. What is P(A and B)? , Question 3 of 11
The following probabilities are based on data collected from U.S. adults during the National Health Interview Survey 2005-2007. Individuals are placed into an activity category based on the amount of weekly activity. InactiveIrregular Light ActivityRegular Light ActivityIrregular Vigorous ActivityRegular Vigorous ActivityProbability0.3970.1920.1040.2330.074Based on these data, what is the probability that a randomly selected U.S. adult participates in any vigorous activity?