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probability and statistics

 
 
Reply Fri 13 Mar, 2015 10:00 am
You roll fair dice, one red and one green.
a)what is the probability of getting a number less then 5 on both?
b) what is the probability of getting a sum of 9 on the two dice.
c) what is the probability of getting a five on both?
d) what is the probability of getting a product 9 on the two dice?
e) what is the probability of getting a sum greater than 9 on the dice?
f) what is the probability of getting a sum less than 5 ib the two dice?
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Type: Question • Score: 1 • Views: 704 • Replies: 2
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fresco
 
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Reply Fri 13 Mar, 2015 10:18 am
@cassandra4120,
Set up a 6 by 6 table for the sample space.
(Green 1 to 6 horizontal, Red 1 to 6 vertical)
Each answer can be found by counting the number of squares for that event and writing it as a fraction out of 36.
e.g. (a) there are 6 squares which represent a total less 5, so p=6/36 =1/6
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fresco
 
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Reply Fri 13 Mar, 2015 10:45 am
TYPO
e.g. (a) there are 6 squares which represent a total less THAN 5, so p=6/36 =1/6
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