Question

Based on a poll,60% of adults believe in reincarnation. Assume that 4 adults are randomly selected and find the indicated probability.

A. The probability that exactly 3 of the 4 adults believe in reincarnation is?

Answer 1

If using ti84 calculator, you can enter $n = 4 , p = 0.60 , and X = 3$ into a binomial probability distribution function (PDF), by press 2nd Vars binompdf(n,p,x)

binompdf(4,0.60,3)

=0.3456

solution :P(X=3)= 0.3456