1. The probability that a patient recovers from a disease is 63%. What is the probability that:

A) 2 out of 3 patients in a group with the disease will survive?

B) Probability that all 3 will survive?

Answers: Just show me how to get there.

A) 44.1%

B) 25%

2. There are 3 consulting firms that have the following probabilities of cost overruns:

Company P(C) P(Overrun)

A 36% 5%

B 20% 4%

C 27% 8%

A) If you use the firms at the proportions listing under P(C), what is the probability that you will be charged an overrun?

B) What is the probability that if you had an overrun it was due to company C?

C) what is the probability that if you had an overrun it was due to company A?

Answers: again, show me how to get there.

A) 4.8%

B) 45.4%

C) 37.8%