3 For problems 12 and 13 consider this information On any gi

3. For problems 12 and 13, consider this information: On any given day, the probability it will rain (R) is 0.32; the probability the wind will blow (W) is 0.2; and the probability that it will rain and the wind will blow is 0.1.

For a randomly selected day, what is the probability that it will rain or the wind will blow? =

Solution

P(R) = 0.32, P(W) = 0.20, P( R and W) = 0.1

P( probability that it will rain or the wind will blow) = P(R) + P(W) - P( R and W)= 0.32+0.20-0.1=0.42