HELP PLEASE FOR PART B URGENT?? (a) From a stack of 3 dice, one is taken and rolled twice.
If, unknown to the gambler, one of the dice is weighted and has a 1/8 chance of rolling a 6, what is the probability that the gambler rolls two 6's?
(b) If the gambler has rolled two sixes, what is the probability that he has rolled the weighted die?

Question

HELP PLEASE FOR PART B URGENT?? (a)	From a stack of 3 dice, one is taken and rolled twice.
If, unknown to the gambler, one of the dice is weighted and has a 1/8 chance of rolling a 6, what is the probability that the gambler rolls two 6's?
(b)	If the gambler has rolled two sixes, what is the probability that he has rolled the weighted die?

hero · Answer

Hints:

The Probability of selecting the weighted die is 1/3
The Probability of rolling a 6 on the first roll with the weighted die is 1/8
The probability of rolling a 6 on the second roll with the weighted die is 1/8

anonymous · Answer

so i multiply the three and get 1/192

anonymous · Answer

then i divide it by my answer in part a and get (1/192)/(41/1728) to get an answer of 9/41?

anonymous · Answer

@Hero is that correct?

amistre64 · Answer

i knew this seemed familiar ... http://openstudy.com/users/amistre64#/updates/52727183e4b077aaee843484

amistre64 · Answer

why do you edit out the content of your queston?