The total number of americans selected are .

In a recent poll of americans donate their tome volunteering.

(a)

Exactly 6 people donate their time to a charity.

The binomial distribution is .

Here , , and .

.

(b)

At least  people donated their time to a charity.

.

.

.

.

.

.

(c)

At most  people donated their time to a charity.

.

(d)

More than people donated their time to a charity.

.

.

.

.

(a) .

(b) .

(c) .

(d) .