web2.0calc
 
+0  
 

 REST IN PEACE, SOLVERS!

0
790
3
avatar+127 

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

 Oct 24, 2018

3+0 Answers

 #1
avatar+997 
+14

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

 

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

 Oct 24, 2018
 #2
avatar+997 
+13

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

 

That's what Rom came up with...

 Oct 24, 2018
 #3
avatar
-1

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!

 Oct 24, 2018

3 Online Users

avatar
avatar

Top Users

avatar+128474 CPhill moderator
avatar+118609 Melody moderator
avatar+33616 Alan moderator
avatar+14915 asinus moderator
avatar+9519 MaxWong
avatar+3144 admin administrator
avatar+2440 GingerAle
avatar+1791 tomtom
avatar+1484 bader
avatar+1085 parmen
avatar+1032 kittykat

Sticky Topics