+0  
 
0
99
3
avatar+555 

 

Markscheme answer is 21/271 = 0.077 and 40/271 = 0.148, but I get 21/236 = 0.089 and 40/236 = 0.170. Am I being stupid or is the markscheme wrong?

Will85237  May 17, 2018
 #1
avatar+93289 
0

I do not understand this question Will. Is some of the explanation missing?

Melody  May 18, 2018
 #3
avatar+26965 
0

Add up all the numbers to get 236.  In row a1, column b2 is 21, so Probability is 21/236.

Alan  May 18, 2018
 #2
avatar+26965 
+1

I get the same as you Will.  Looks like whoever did the marking scheme added an extra 35 into the total!

Alan  May 18, 2018

52 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.