Answered: Consider above contingency table…

Consider above contingency table listing counts of Spam and NoSpam email with or without "Free" word in the text. What is the P(Free=No | Spam) Selection a. 0.45 b. 0.25 c. 0.15 please explain

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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Question

Consider above contingency table listing counts of Spam and NoSpam email with or without "Free" word in the text.

What is the P(Free=No | Spam)

Selection

a. 0.45

b. 0.25

c. 0.15

please explain

Contingency Table (Counts of Events)
Class
"Free"
Yes
No
Spam
45
15
60
NoSpam
10
30
40
55
45
100

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