In a study conducted for the state Department of Education, 30 percent of the teachers who left teaching did so because they were laid off. Assume that we randomly select 10 teachers who have recently left their profession. Find the probability that exactly 4 of them were laid off.
A) .6496
B) .8497
C) .2001
D) .1503

Question

Quizplus · Accepted Answer

P(X) = n!/[x!(n − x)!] × p^x(1 − p)ⁿ⁻^x, for x = 4, when p = .3 and n = 10

In a Study Conducted for the State Department of Education