Friday

April 18, 2014

April 18, 2014

Posted by **ken** on Friday, October 31, 2008 at 6:37pm.

a) P(5, given that the sum are odd)

b) P(odd, given that the sum rolled is 5)

c) P(7, given that one of the dice rolled was odd)

- math -
**drwls**, Friday, October 31, 2008 at 7:49pma) There are 36 possibilities. 18 of them are odd. Possible outcomes with a sum of 5 are: (1,4), (4,1), (2,3) and (3,2). The conitional probability is therefore 4/18 or 2/9.

b) If a sum of 5 is rolled, the sum is necessarily odd, so the conditional probability is 1.

c) The number of ways that only one die can be odd is:

(1,2), (1,4), (1,6), (3,2), (3,4), (3,6), (5,2), (5,4), (5,6), and the same combinations in reverse order, for a total of 18. Six of the combinations total 7, so the conditional probability is 6/18 = 1/3.

**Related Questions**

math - a pair of dice is rolled. is the event of rolling a sum of the dice is an...

mathhw - a pair of dice is rolled. find the probability that the sum of the dice...

math - A pair of dice is rolled once. suppose you lose $9 if the dice sum to 9 ...

algebra - two dice are rolled. if a 3 appears on either dice,then the two dice ...

Math - Suppose you play a game in which two fair standard dice are rolled. If ...

math - two dice are rolled find the probability of getting a 5 on either dice or...

math - A pair of dice is rolled and the sum of the dice is found. What is the ...

Math/ Probability - Please Help!!! A pair of dice are rolled and the sum on ...

math - two 6 sided dice are rolled.what is the probability the sum of the 2 ...

probabbility - Find the (theoretical) probability of a given event, assuming ...