We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive pseudonymised information about your use of our website. cookie policy and privacy policy.
 
+0  
 
0
132
3
avatar+122 

can i please get help on how to work this out

 Nov 21, 2018
 #1
avatar+128 
+1

So first, we find the probability that the highly demented dice will land on a 3. You will get 0.12.

If you roll the dice once, the probability of landing on a 3 or 4 is 0.12 + 0.21 = 0.33.

Next up,

0.33 = 33/100.

33/100 * 300 == 99

If you want to estimate, then you round 0.33 to 1/3, and 1/3 * 300 is easily 100.

 Nov 21, 2018
 #2
avatar+626 
0

For estimation I'd already say Face 3 is around a 0.1 probability because \(0.13+0.05\) is around 0.2, \(0.21\) is around \(0.19\) which is around 0.2, and 0.3 is 0.3. Adding we get 0.9 and 1-0.9=0.1

\(0.1+0.2=0.3\) and \(300 \times 0.3=90\).

Therefore I'd estimate around 80-100 times.

 

You are very welcome!

:P

 Nov 21, 2018
 #3
avatar+99736 
+1

The sum of the probabilities = 1

 

So

 

p(3)   = 1 - .13 - .05 - .21 - .19 - .3   =  .12

 

So 

 

P ( 3 or 4)    =  [ .12 + .21 ]  =  .33  =   1/3

 

So...

 

.1/3 * 300   =  100 times

 

 

 

cool cool cool

 Nov 21, 2018

20 Online Users

avatar
avatar