Question

Please help me!!

a bag contains 18 marbles. there are 6 red marbles, 6 yellow marbles, and 6 green marbles. a marble is drawn at random and returned. then another marble is drawn at random

which statements are true?

A. the expected probability of drawing a green marble first is the same as the expected probability of drawing a green marble second.

B. there are six possible outcomes

C. the probability of drawing a red marble first is the same as not drawing a red marble second

D. the expected probability of drawing a red marble and then a yellow marble is 1/9

E. there are three possible outcomes from drawing the same color twice

F. the probability of drawing a yellow marble and then a yellow marble is 1/6

Answer 1

Explanation:

A. False. The probability of drawing a green marble twice is even smaller (It may be true though depending on what the question is asking, if it is asking the chance of drawing a green marble second is the same as the 1st chance, then yes it is True.

B.False

C. False

D.True, 1/3*1/3 (Simplified version of 6/18*6/18) is 1/9

E. False (Although this may be true, again depending on the type of question)

F. False