100 people polled: 28 watch Simpsons. 31 watch American Dad. 42 watch Family Guy. 9 watch Simpsons and American Dad. 10 watch Simpsons and Family Guy. 6 watch American Dad and Family Guy. 4 watch all three shows. How many people watch none of these shows (fill in the blank with a single integer only, no words)? A How many people watch Simpsons but not American Dad and not Family Guy? A

100 people polled: 28 watch Simpsons. 31 watch American Dad. 42 watch Family Guy. 9 watch Simpsons and American Dad. 10 watch Simpsons and Family Guy. 6 watch American Dad and Family Guy. 4 watch all three shows. How many people watch none of these shows (fill in the blank with a single integer only, no words)? A How many people watch Simpsons but not American Dad and not Family Guy? A

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Random Variables

A random variable Z is a real valued function of the type Z: S → R on a sample space S. That means the function assigns a real number to every primitive event in the sample space. In other words, a random variable is a function mapping a sample space S to a set of real numbers R.

Question

100 people polled: 28 watch Simpsons. 31 watch American Dad. 42 watch Family
Guy. 9 watch Simpsons and American Dad. 10 watch Simpsons and Family Guy. 6
watch American Dad and Family Guy. 4 watch all three shows.
How many people watch none of these shows (fill in the blank with a single integer
only, no words)?
A/
not Family Guy?
How many people watch Simpsons but not American Dad and
A/

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