4. Suppose 15% of the cereal boxes contain a prize. You are determined to buy cereal boxes until you win a prize. a) What is the probability you will have to buy at most 2 boxes? b) What is the probability you will have to buy exactly 4 boxes? c) What is the probability you will have to buy more than 4 boxes? d) What is the average number of boxes you will need to buy before you get a prize?

4. Suppose 15% of the cereal boxes contain a prize. You are determined to buy cereal boxes until you win a prize. a) What is the probability you will have to buy at most 2 boxes? b) What is the probability you will have to buy exactly 4 boxes? c) What is the probability you will have to buy more than 4 boxes? d) What is the average number of boxes you will need to buy before you get a prize?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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