A local university reports that 3 of their students take the

A local university reports that 3% of their students take their general education on a pass/fail basis. Assume that 50 students are regitered for a general education course. What is the probability that less than four are registered on a pass/fail basis?

Solution

This would be binomial, with number of trials, n = 50, x = less than 4, (0, 1, 2, or 3), and p = .03.

Using a calculator, binomcdf(50, .03, 3) = 0.9372 (answer)