Question

a.) If 40% of all commuters ride to work in carpools, what is the expected number of workers who will ride in carpools when 5 people are randomly selected

b.) Find the variance for the values of n and p when the conditions for the binomial distribution are met.
   n = 200, p = 0.25

37.5

50

6.1

150

c.) Find the standard deviation for the values of n and p when the conditions for the binomial distribution are met.
   n = 600, p = 0.65

136.5

390

11.7

210

d.) 30% of people in a city smoke. If 20 individuals are randomly selected what is the probability that exactly 10 smoke?

0.031

0.3

0.20

0.67

e.) In a binomial experiment the probability of failure remain the same at each trial

True

False

Answer 1