22315 925 PM Homework HW 53 Score 0 of 1 pt 13 of 15 14 comp

2/23/15 9:25 PM Homework: HW 5.3 Score: 0 of 1 pt 13 of 15 (14 complete) HW Score: 47.67%, 7.15 of 15 pts 5.3.27 E Question Help Among 44 to 48-year-olds, 30% say they have driven scar while under the infuence of peer pressure. Suppose two 4 to 40-year-olds are selected at random. (a) Whst is the probsbilty that at least one has not driven a car while under the influence of peer pressure? (b)Whst is the probability that at least one has driven soar while under the influence of peer pressure? ll (a) The probability that at least one hes not driven B car while infuence of peer pressure is o 8479 (Round un to four decimal places as needed) (b) The probebility that at least one of the two randomly selected adults has driven car while under the influence of peer pressure is 0 (Round to four decimal places as needed.) ean Question is complete Move your pointer over or tap on the red indicators to see incomect answers All parts showing Similar Exercise

Solution

a)probability that at least one has not driven under the influence of peer pressure=2*39/100*61/99 +61/100*60/99=.4806+.3696 =.8502

b)Probability of atleast one has driven=1-probabiltiy of neither has driven

                              probability of neither has driven =61/100*60/99 =.3696

Now probability of atleast one has driven is =1-.3696 =.6303