Expectation - Anderson School District Five

15. One out of four Americans over 55 has eaten pizza for breakfast. If a sample of 10 Americans over 55 is selected at random, find the probability that at most three have eaten pizza for breakfast? 16. If 36% of all students owe money before graduating, find the probability that if 200 students are selected, at least 70 owe money. 17. ................
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