fill in each blank with the appropriate word or phrase.

5. In a binomial distribution, there are _______ possible outcomes for each trial.

determine whether the statement is true or false. If the statement is false, rewrite it as a true statement.

10. The mean of a binomial random variable is found by multiplying the number of trials by the success probability.

determine whether the random variable X has a binomial distribution. If it does, state the number of trials n. If it does not, explain why not.

12. Ten students are chosen from a statistics class of 300 students. Let X be the number who got an A in the

class.

15. A coin is tossed until a head appears. Let X be the number of tosses.

determine the indicated probability for a binomial experiment with the given number of trials n and the given success probability p. Then find the mean, variance, and standard deviation.

18. n = 10, p = 0.2, P(1)

26. n = 30, p = 0.9, P(More than 27)

31. Your flight has been delayed: At Denver International Airport, 81% of recent flights have arrived on time. A sample of 12 flights is studied.

a. Find the probability that all 12 of the flights were on time.

b. Find the probability that exactly 10 of the flights were on time.

c. Find the probability that 10 or more of the flights were on time

d. Would it be unusual for 11 or more of the flights to be on time?