احد حل هذا السؤال؟؟
b. The Bruskin Market Research, Inc. determined that 40% of college students work part-time during the academic year. For a random sample of 5 students, what is the probability that
1) at most 3 work part-time?
2) at least 2 work part-time?
3) fewer than 3 work part-time?