1. Suppose you have a binomial distribution withn= 17 andp= 0.5. Find P(8 X 11).

a)0.6577

b)0.6137

c)0.6193

d)0.5193

e)0.8137

f)None of the above

2. A manufacturer of matches randomly and independently puts 21 matches in each box of matches produced. The company knows that one-tenth of 8 percent of the matches are flawed. What is the probability that a matchbox will have one or fewer matches with a flaw? a)0.006813 b)0.9878 c)0.9920 d)0.1431 e)0.8448 f)None of the above

3. A fish tank in a pet store has 21 fish in it. 9 are orange and 12 are white. Determine the probability that if we select 4 fish from the tank, at least 2 will be white. a)0.2114 b)0.8105 c)0.5714 d)1.0305 e)0.1894 f)None of the above