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Name: March 27, 2001 Score:

MATH 147

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Quiz 7

(2 pts.)

Problem 1. Circle T for a true statement, F for a false statement.

T F If 20 gumballs are drawn without replacement from a gumball machine, we can use the binomial formula to calculate the probability of getting less than 10 red gumballs.

(2 pts.)

Problem 2. Simplify:

a. 8! =

b. =

(6 pts.)

Problem 3. 7 tickets are drawn with replacement from the box shown. (B=Blue, R=Red)

a. How many ways can three blue tickets be drawn?

b. What is the probability of drawing exactly 5 blue tickets from the box?