answer the following questions:

1.) Of 50 women treated for breast cancer in the local cancer unit, 35 of them survived for at least 5 years. For a woman who has just been diagnosed with breast cancer, our best guess is that the probability that she will survive for 5 years is

a. 35/100 = .35

b. we don't have enough information to say.

c. 15/35= .43

d. 35/50 = .70

2.) Last year there were 300 new Ph.D.s in chemistry looking for academic jobs. Of those, 100 were women and 200 were men. Nationwide last year there were 90 new hires in chemistry departments. How many of those new hires would be expected to be women if there was no gender discrimination?

a. 150

b. 30

c. 45

d. we don't have enough information to answer.

e. 25

3.) I am looking down on a parking lot, and can see that about 5% of the cars are red and about 25% of the cars are white. To estimate the probability that the next car to leave the lot will be red or white, I would

a. multiply those two percentages.

b. count the number of green cars.

c. add those two percentages.

d. It can't be estimated from the information provided.