Question
The probability that a 50 year old man will be alive in 10 years is 0.78 , and the probability that his 45 year old wife will be alive is 0.91 . Determine the probability that in 10 years:
a. both will be alive
b. at least one will be alive (HINT: what is the complement to the event that at least one is alive?)
c. only the wife will be alive
a. both will be alive
b. at least one will be alive (HINT: what is the complement to the event that at least one is alive?)
c. only the wife will be alive
Answers
Damon
a. 0.78 * 0.91
b. both dead = (1 - .78)(1 - .91)
so at least one alive = 1 - (1 - .78)(1 - .91)
c. her alive * him dead = .91 (1 - .78)
b. both dead = (1 - .78)(1 - .91)
so at least one alive = 1 - (1 - .78)(1 - .91)
c. her alive * him dead = .91 (1 - .78)
Damon
.... and it looks like my wife and I are long gone.