My Math Forum  

Go Back   My Math Forum > High School Math Forum > Probability and Statistics

Probability and Statistics Basic Probability and Statistics Math Forum


Reply
 
LinkBack Thread Tools Display Modes
October 29th, 2016, 09:46 AM   #1
Newbie
 
Joined: Oct 2016
From: Zambia

Posts: 2
Thanks: 0

Smile Probability that a user will watch a video

The question goes like this:

The viewing rate of a video, i.e. the probability that it is watched by the members of a community when it appears on their news feed is 0.35

A particular user, usr, has a probability 0.85 of watching a video that appears on his news feed.

Given the viewing rate of the video and the fact that the video does appear on his news feed, what is the probability that usr will watch the video?

Some help, please. I'm very weak in probability.
microlifecc is offline  
 
October 29th, 2016, 10:02 AM   #2
Senior Member
 
romsek's Avatar
 
Joined: Sep 2015
From: USA

Posts: 2,037
Thanks: 1063

I don't think you have the question correct.

I believe the first probability is the that of the video appearing on the news feed at all.

Otherwise the first statement has no bearing on the problem.

As stated the answer is just that given in the problem. The particular user has a probability of 0.85 watching the video.

If you do mean there is a probability of 0.35 that it appears on his news feed, then the probability that this user watches the video is

$P[\text{usr watches video}] = P[\text{usr watches video | video appears on news feed}]\cdot P[\text{video appears on newsfeed}] = (0.85)(0.35) = 0.2975$
romsek is offline  
October 29th, 2016, 06:51 PM   #3
Newbie
 
Joined: Oct 2016
From: Zambia

Posts: 2
Thanks: 0

Smile Edit

Sorry about that. My instructor says it is not the viewing rate of the video rather the attractive coefficient of the video. Greater the value of the coefficient higher the probability that it is watched. Now the video does appear on the news feed of usr. usr, has a probability 0.85 of watching a video that has a coefficient of 1. What is the probability he will watch this video?

Last edited by microlifecc; October 29th, 2016 at 06:58 PM.
microlifecc is offline  
Reply

  My Math Forum > High School Math Forum > Probability and Statistics

Tags
mathematics, probability, statistics, user, video, watch



Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
probability that the user wins Student@work Probability and Statistics 1 February 9th, 2012 01:13 PM
Reel Math Challenge-Watch and Vote for Our Video hherdogan New Users 4 January 14th, 2012 06:56 AM
Probability Space - A video I made (YouTube) britcruise Probability and Statistics 0 September 30th, 2011 08:34 AM





Copyright © 2018 My Math Forum. All rights reserved.