Question 437415
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi
10 marbles: 3 red, 2 blue and 5 grean
 P(choosing a red) = 3/10
 William randomly chooses a marble and puts it back into the bag.  
He repeats this process 70 times.
How many times would he be expected to draw a red marble: 3/10*70 = 21 times