sThe Census Bureau says that 21% of Americans aged 18 to 24 do not have a high school diploma. A vocational school wants to attract young people who may enroll in order to achieve high school high school equivalency. The school mails an advertising flyer to 25,000 persons between the ages of 18 and 24.
(a) If the mailing list can be considered a random sample of the population, what is the mean number of high school dropouts who will receive the flyer?
(b) What is the approximate (use normal distribution) probability that at least 5000 dropouts will receive the flyer?