2) It is thought by some researchers that exercise for college students is related to the sex of the student. A survey was taken of 470 college students in California that relates their sex to the frequency of exercise per week. The results are summarized in the contingency table below. No exercise per week Once or twice per week More than twice per week Totals Male 88 76 58 222 Female 72 85 91 248 Totals 160 161 149 470 If one of the 470 college students is selected at random, what is the probability that the student is a male given that the student exercises more than twice per week? Round your answer to 4 decimal places. 0 0.3893 0.4723 0.4720 0.4357 None of the above 3) It is thought by some researchers that exercise for college students is related to the sex of the student. A survey was taken of 470 college students in California that relates their sex to the frequency of exercise per week. The results are summarized in the contingency table below. No exercise per week Once or twice per week More than twice per week Totals Male 88 76 58 222 Female 72 85 91 248 Totals 160 161 149 470 If one of the 470 college students is selected at random, what is the probability that the student is a female who exercises at least once per week? Round your answer to 4 decimal places. 0 0.1936 0 0.5277 0 0.1532 0 0.3745 None of the above 4) If a fair coin is tossed twice the possible outcomes are HH, HT, TH or TT, where HH means both tosses are heads and HT means that the first toss is a head and the second toss is a tail, etc. Since the coin is fair, a 50-50 chance of getting a head or a tail, we assign a probability of - to each of the four outcomes. Assuming that a fair coin was tossed twice, find the probability that exactly one of the tosses is a head and the other toss is a tail. O 0.25 0.50 O 0.75 O 0.95 None of the above 5) If a fair coin is tossed twice the possible outcomes are HH, HT, TH or TT, where HH means both tosses are heads and HT means that the first toss is a head and the second toss is a tail, etc. Since the coin is fair, a 50-50 chance of getting a head or a tail, we assign a probability of - to each of the four outcomes. Assuming that a fair coin was tossed twice, find the probability that both tosses were heads given that at least one of the tosses was a head. Round your answer to 4 decimal places. 0 0.3333 0.5000 0.6667 0.0000 O None of the above