Question 72533
<pre><font size = 5><b>Events W,X,Y and Z are independent, 
and P(W)= 0.75, P(X)= 0.25, P(Y)= 0.2,
and P(Z)= 0.3. Find P(W and X).

If they are independent, then "AND" means "MULTIPLY"

P(W and X) = P(W)<font face = "symbol">·</font>P(X) = (0.75)<font face = "symbol">·</font>(0.25) = 0.1875

Edwin</pre>