4. Your email account has 100 emails in your inbox: 60 are spam mails while 40 arenot. Of the 60 spam mails, 35 contain the word "FREE". Of the rest, 3 contain the"FREE". IF an email contains the word "FREE", what is the probability that it is aspam mail?

Given: The email account has 100 emails in inbox 60 are spam while 40 are not of the spam mails 35…

Answered: Your email account has 100 emails in…

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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Similar questions

An urn contains 5 red balls, 3 green balls. Draw 8 balls without replacement. What is the probability that the 3rd ball is red and the seventh a green one? Give your answer up to two decimals
The manager of the co-ed baseball team randomly selects a 9-person batting order from a group of 15 people. Of these 15 people, 7 are women and 8 are men. Find the probability that at least one woman is included in the batting order.
The mathematics department of a college has 8 male professors, 11 female professors, 14 male teaching assistants, and 7 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a professor or a female.
There are two boxes, the first contains 5 white and 5 black balls and the second contains 7 white and 3 black balls. A ball will be selected from each box, randomly. What is the probability that the two selected balls are white?
A group of six students is chosen at random from a list of five maths students and four psychology students. What is the probability that four maths students and two psychology students are chosen?
a box contains five red, three blue and two white poker chips. two are selected without replacement. Find the probability that both are the same color
Kim has a bag of 10 white marbles and 15 black marbles. What is the probability that she will choose to marbles that are both the same colour without replacement
A golf ball is selected at random from a golf bag. If the golf bag contains 12 brown balls, 9 yellow balls, and 3 orange balls, find the probability of the following event. The golf ball is brown or yellow.
A jar contains 2 red marbles, 9 green marbles, and 8 blue marbles. what is the probability that you draw 5 green marbles in a row if you DO replace the marbles after each draw?
The mathematics department of a college has 6 male professors, 11 female professors, 10 male teaching assistants, and 12 female teaching assistants. If a person is selected at random from the group, find the probability that the selected person is a teaching assistant or a female.
Two cards are drawn from a standard deck without replacement. Find the probability that both cards are hearts.

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Your email account has 100 emails in your inbox: 60 are spam mails while 40 are not. Of the 60 spam mails, 35 contain the word "FREE". Of the rest, 3 contain the "FREE". IF an email contains the word "FREE", what is the probability that it is a spam mail?