The vice-president of a business firm has reviewed the records of the firm's personnel and found that 70% of the employees read The Wall Street Journal. If the vice president was to choose 12 employees at random, what is the probability that the number of these employees who read The Wall Street Journal is the following?

Question

The vice-president of a business firm has reviewed the records of the firm's personnel and found that 70% of the employees read The Wall Street Journal. If the vice president was to choose 12 employees at random, what is the probability that the number of these employees who read The Wall Street Journal is the following?
a) at least equal to five?
b) between four and ten inclusive?
c) no more than seven

Bot · Answer

? a) 0.7881 b) 0.9072 c) 0.6164