Question

bag contains 50 marbles,10 of which are blue ,8 are red,20 are green ,and 12 are purple . Marcie takes a ow marble out of the bag ,records the color and returns it to the bag how many red marbles should she expect after 500 trials

Answer 1

probability of pick a red marble in one draw = 8 / 50

expected number of red marbles in 500 trial  = 8 * 500 / 50  = 80 answer