1.

(9 pts) Calculate each binomial probability (p.226, #6.22):

a.

Fewer than 4 successes in 12 trials with a 10 percent chance of success.

b.

At least 3 successes in 7 trials with a 40 percent chance of success.

c.

At most 9 successes in 14 trials with a 60 percent chance of success.