SOLUTION: there are 3 red, 2 blue, and 5 green marbles in a bag. William randomly chooses a marble and puts it back into the bag. He repeats this process 70 times. How many times would he

Algebra ->  Probability-and-statistics -> SOLUTION: there are 3 red, 2 blue, and 5 green marbles in a bag. William randomly chooses a marble and puts it back into the bag. He repeats this process 70 times. How many times would he      Log On


   



Question 437415: there are 3 red, 2 blue, and 5 green marbles in a bag. 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?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 
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