Homework Help: Probability

Posted by anoneemose on Thursday, January 24, 2013 at 9:03pm.

Given the probability of rain on any given day in March is 1/5, find the probablity that: It rains on March 10 and 12, but not on March 11th. This is supposed to be used with multiplication Rule 1:
P(A and B)= P(A)*P(B) cant figure it out, the answer is 4/125 and I have no clue how

Probability - anoneemose, Thursday, January 24, 2013 at 9:34pm
I figured this out:
1/5 = rain
4/5= no rain
1/5*1/5*4/5 = 4/125
Probability - Reiny, Friday, January 25, 2013 at 12:36am
you want:
rain, no rain, rain
= (1/5)(4/5)(1/5) = 4/125

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