What is the probability that it will rain on a given day if the probability that it will not rain is 1/3?
If there are p ways the first way can be made, and q ways a second can be made, then pxq
1/3x1/7 (7 days in a week)
1/21?

Question

What is the probability that it will rain on a given day if the probability that it will not rain is 1/3?
If there are p ways the first way can be made, and q ways a second can be made, then pxq
1/3x1/7 (7 days in a week)
1/21?

directrix · Answer

Probabiility that it will rain + probability it will NOT rain = 1

Prob of rain = 1 - 1/3 = 2/3

anonymous · Answer

Are you trying to find the probability that it will rain in a week or a day?

directrix · Answer

This is what I am doing and thought that the question meant: What is the probability that it will rain on a given day.

directrix · Answer

Have you studied binomial probability yet?

j.f · Answer

Yes, polynomials and all that good stuff. I figured the meant 7 days with  "on a given day"

j.f · Answer

But you are  right