+0  
 
0
42
3
avatar+97 

Suppose you have a weighted coin in which heads comes up with probability 3/4 and tails with probability 1/4. If you flip heads, you win 2 dollars, but if you flip tails, you lose 1 dollar. What is the expected value of a coin flip? Express your answer as a decimal

MATHEXPERTISE  Oct 24, 2018
 #1
avatar+372 
+7

https://web2.0calc.com/questions/expected-value_5

 

You asked this question earlier today. I think Rom was helping you on this one.

KnockOut  Oct 24, 2018
 #2
avatar+372 
+6

\(\text{let }P[\text{heads}] = p\\ E[V] = 2p -(1-p) = 3p-1\)

 

That's what Rom came up with...

KnockOut  Oct 24, 2018
 #3
avatar
0

Rom also came up with “i'm gonna assume you can plug p=3/4 in”

 

This site has a profanity filter, but it does not work very fucking well.

What the site needs is a stupidity filter. With just a half-assed stupidity filter, Rom’s assumption would have been correct!

Guest Oct 24, 2018

22 Online Users

avatar
avatar

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.