Question

3. Use the data concerning car fatalities (for ar wata concerning car fatalities (for a randomly chosen victim) presented in the following table to determine the probabilities indicated. Day Male Female Total 125 60 30 Sun Mon Tues Wed Thur Fri Sat 91 79 41 120 143 48 Total 494 258 752 Grand Total a) What is the probability that a victim is female? b) What is the probability that a victim dies on a Monday? c) What is the probability that a victim does not die on a Monday? (3) d) What is the probability that a victim dies on a weekend (Sat or Sun)? e) What is the probability that a victim is either female or dies on a Friday?__(3) 1) What is the probability that a victim is female and dies on a Sunday? B) What is the probability that in a Sunday fatal crash, the victim is female? (3)

Answer 1

Solution: Given data is Day Female Total Sun Male 82 60 43 3) Mon Tues Wed Thur 56 30 59 63 32 33 96 79 120 sau 143 Total 9548 143 ug4 258 752 (9) Probability that a viction is female z Total female viction 10 Total victim 258 2 0.343 z (6) Probab 752 that a victim dies on a Moriday. gi 752 (6) Probability that a victim does not die on a monday: 1 - 3 - I 1952 I 0.879 1 (d) Probability that a victim dies on a Weekend (Sat or sun) = 143 + 125 752 752 z 268 752

inte re Probability that avictim is either female or dies ona Friday, z Probability of female victions et Probability of friday victims - probe of female and friday viction z 258 - 120 - 4 752 752 752 z 337 I 0.448 752 (f) Sunday Probability that a victims is female and dies on a I 43 752 19 Prob. that Sunday fatal crash the viction is fennale 43 125