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Find the indicated probability. 6) The table below describes the smoking habits of a group of asthma sufferers. 6) Light Heavy Nonsmoker smoker smoker Total Men 402 35 42 479 Women 376 45 33 454 Total 778 BO 75 933 If two different people are randomly selected from the 933 subjects, find the probability that they are both heavy smokers. Round to six decimal places. A) 0.0001778 B) 0.006462 C) 0.002026 D) 0.006383 Solve the problem. 7) Four hundred accidents that occurred on a Saturday night were analyzed. The number of vehicles 7) involved and whether alcohol played a role in the accident were recorded. The results are shown below: Number of Vehicles Involved Did Alcohol Play a Role?| 1 2 3 or more Totals Yes 59 92 19 170 No 24 173 33 230 Totals 83 265 52 400 Given that an accident involved multiple vehicles, what is the probability that it involved alcohol? 19 A) 52 111 111 19 317 C) 400 D) 400 Find the indicated probability. 8) An archer is able to hit the bull's-eye 50% of the time. If she shoots 8 arrows, what is the probability 8) that she gets exactly 4 bull's-eyes? Assume each shot is independent of the others. A) 0.273 B) 0.219 C) 0.0625 D) 0.00391 Assume that a procedure yields a binomial distribution with a trial repeated n times. Use the binomial probability formula to find the probability of x successes given the probability p of success on a single trial. 9) n = 30, x = 5, P = = 9) A) 0.067 B) 0.198 C) 0.172 D) 0.421 Solve the problem. 10) The probability that a person has immunity to a particular disease is 0.6. Find the mean number 10) who have immunity in samples of size 30. A) 12.0 B) 0.6 C) 15.0 D) 18.0 Solve the problem. Round to the nearest tenth unless indicated otherwise. 11) In one region, the September energy consumption levels for single-family homes are found to be 11) normally distributed with a mean of 1050 kWh and a standard deviation of 218 kWh. Find P45. which is the consumption level separating the bottom 45% from the top 55%. A) 1021.7 B) 1148.1 C) 1078.3 D) 1087.8

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