Mr. and Mrs. Traver went bowling with Mr. and Mrs. Greene. They all bowled one game, and no two of them had the same score. The combined score of Mr. and Mrs. Traver was 187, the same as that of Mr. and Mrs. Greene. You will be provided statements below that you should take as true, and from them, you must determine which first name (one is Joe) matches with which last name. You must also determine each bowler's score.

Fred's score was lower than the average score, but he did not have the lowest score of the four bowlers.
Karen's score was three points lower than Nancy's.
Mr. and Mrs. Traver's final scores had only one point difference between them.
The average score of the two women was two points lower than the average score of the two men.
Based on the above information, you must complete the following chart correctly in order to earn your extra credit:
last name score
Karen:
Fred:
Joe:
Nancy:

step-by-step explanation:

i found the life tables for the year 2012. 

life table of males at age 30. probability of dying between ages x and x+1

total population:  

29–30 . . . . . . . . . . . . 0.001030

30–31 . . . . . . . . . . . . 0.001061

males:  

29–30 . . . . . . . . . . . . 0.001420

30–31 . . . . . . . . . . . . 0.001448

white population

29–30 . . . . . . . . . . . . 0.001005

30–31 . . . . . . . . . . . . 0.001037

white males

29–30 . . . . . . . . . . . . 0.001372

30–31 . . . . . . . . . . . . 0.001399

non hispanic white population

29–30 . . . . . . . . . . . . 0.001083

30–31 . . . . . . . . . . . . 0.001116

non hispanic white males

29–30 . . . . . . . . . . . . 0.001477

30–31 . . . . . . . . . . . . 0.001503

jacob, non hispanic white male. 30 years old.

probability that jacob lives to be 30 years old. 

since the given probabilities are probabilities of dying, i think we simply subtract it from 1 to get the probability of living. we will use the probability of non hispanic white male.

                                          probability of living to be 30 y.o.

29 - 30 : 1 - 0.001477 = 0.998523

30 - 31 : 1 - 0.001503 = 0.998497