3. At a high school movie night, the refreshment stand sells popcorn and soft drinks. Of the 100 students who came to the movie, 62 bought popcorn and 47 bought a drink. 38 students bought both popcorn and a drink. Part A: What is the probability that a student buys a drink? Express your answer as a percentage. Part B: What is the probability that a student buys a drink, given that he or she buys popcorn? Express your answer as a percentage, rounded to the nearest tenth. Part C: Are buying a drink and buying popcorn independent or dependent events? Justify your answer.

3. At a high school movie night, the refreshment stand sells popcorn and soft drinks. Of the 100 students who came to the movie, 62 bought popcorn and 47 bought a drink. 38 students bought both popcorn and a drink. Part A: What is the probability that a student buys a drink? Express your answer as a percentage. Part B: What is the probability that a student buys a drink, given that he or she buys popcorn? Express your answer as a percentage, rounded to the nearest tenth. Part C: Are buying a drink and buying popcorn independent or dependent events? Justify your answer.

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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