Question

An email filter is made to separate valid e-mails from spam. The word free occurs in...

An email filter is made to separate valid e-mails from spam. The word free occurs in 78% of the spam messages and only 3% of the valid messages. Also, 17% of the messages are spam.
(a) If an email message is randomly selected, find the probability that it is spam, given that it contains the word free.
(b) If an email message is randomly selected, find the probability that it is valid, given that it does not contain the word free.
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
From past experience 44% of emails are identified as spam by Outlook email users. An email...
From past experience 44% of emails are identified as spam by Outlook email users. An email spam filter is created that is constantly updated with the data from incoming emails. The inputs with the filter include that the word “inheritance” is included in 40% of a spam emails this word is included is only 2% of non spam emails What is the probability that a randomly selected email contains the word “inheritance”
Email Subject Word Spam Frequency ‘Free’ ‘Sale’ Y Y Y 20 Y Y N 8 Y...
Email Subject Word Spam Frequency ‘Free’ ‘Sale’ Y Y Y 20 Y Y N 8 Y N Y 6 Y N N 11 N Y Y 4 N Y N 19 N N Y 10 N N N 37 Total 115 We wish to create a spam filter. So as a first pass at this task we wish to determine some association rules based on the sample set of email data given in the above table. Based on the above...
2. Probability (30%). Figure out the probability in the following scenarios. (a) A number generator is...
2. Probability (30%). Figure out the probability in the following scenarios. (a) A number generator is able to generate an integer in the range of [1, 100], where each number has equal chances to be generated. What is the probability that a randomly generated number x is divisible by either 2 or 3, i.e., P(2 | x or 3 | x)? (5%) (b) In a course exam, there are 10 single-choice questions, each worthing 10 points and having 4 choices...
These tests are intended for undergraduate students in college or those under 18 years of age....
These tests are intended for undergraduate students in college or those under 18 years of age. Read these directions carefully! The below test includes 10 questions, randomly selected from a large inventory. Most questions will be different each time you take the test, You must answer at least 9 out of 10 questions correctly to receive your Certificate. You have 40 minutes to complete each test, and you must answer all 10 questions in order to to see your results....
1) Describe an example of each of the following that may be found of your kitchen:...
1) Describe an example of each of the following that may be found of your kitchen: Explain how your choice falls into this category, and if there is a chemical name or symbol for it, provide that as well. Provide a photo of your example with your ID card in it. a) a compound b) a heterogeneous mixture c) an element (symbol) Moving to the Caves… Lechuguilla Caves specifically. Check out this picture of crystals of gypsum left behind in...
Please read the article and answear about questions. Determining the Value of the Business After you...
Please read the article and answear about questions. Determining the Value of the Business After you have completed a thorough and exacting investigation, you need to analyze all the infor- mation you have gathered. This is the time to consult with your business, financial, and legal advis- ers to arrive at an estimate of the value of the business. Outside advisers are impartial and are more likely to see the bad things about the business than are you. You should...
QUESTION 1 1. Brianna is trying to increase her chances of being promoted to vice president...
QUESTION 1 1. Brianna is trying to increase her chances of being promoted to vice president by working to build good work relationships with other managers outside her own department. Brianna's behavior should be viewed as dysfunctional politics. functional politics. coercive power. functional influence. 2 points QUESTION 2 1. The Gingerbread Factory has a separate unit that makes their chocolate crunch cookies and another unit that is completely responsible for all operations in producing their ginger snap cookies. The Gingerbread...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how...
Delta airlines case study Global strategy. Describe the current global strategy and provide evidence about how the firms resources incompetencies support the given pressures regarding costs and local responsiveness. Describe entry modes have they usually used, and whether they are appropriate for the given strategy. Any key issues in their global strategy? casestudy: Atlanta, June 17, 2014. Sea of Delta employees and their families swarmed between food trucks, amusement park booths, and entertainment venues that were scattered throughout what would...
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation....
Using the model proposed by Lafley and Charan, analyze how Apigee was able to drive innovation. case:    W17400 APIGEE: PEOPLE MANAGEMENT PRACTICES AND THE CHALLENGE OF GROWTH Ranjeet Nambudiri, S. Ramnarayan, and Catherine Xavier wrote this case solely to provide material for class discussion. The authors do not intend to illustrate either effective or ineffective handling of a managerial situation. The authors may have disguised certain names and other identifying information to protect confidentiality. This publication may not be...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT