Solution for problem 9E Chapter 4.2
Several million lottery tickets are sold, and 60% of the
Statistics for Engineers and Scientists | 4th Edition
Step 1 of 3:
Given, 60% of the tickets are held by women in several million lottery tickets and 5 winning tickets are drawn at random.
Let X follows binomial distribution with probability mass function is
P(x: n,p) = (1 - p , x = 0, 1, 2, ….., n.
n = sample size
x = random variable
p = probability of success
q = 1 - p (probability of failure)
Mean of the binomial distribution is
Variance of the binomial distribution is