Question

A box contains 6 red, 9 white, 3 black and 12 green marbles. A player receives $2 if he draws a red marble, $1.50 if he draws a white marble, $3 if he draws a black marble. The player must pay $4 if he draws a green marble. Let X = amount of money the player receives. Create a probability distribution table for X and find the expected value of this game to the player. (Write probability values in decimals

Answer 1

Answer:

which class plz tell me.

Answer 2

Answer:

(a) Total no. of marbles=3+2+4=9

(1) No. of white marbles=2

∴ probability of getting a white marble=

9

2

(2) No. of blue marbles=3

∴ probability of getting a blue marble=

9

3

=

3

1

(3) No. of red marbles=4

∴ probability of getting a red marble=

9

4

(b)Since, Total no. of balls = 5+8+7=20

(1) No. of balls that are white or green = 8+7=15

∴ probability of getting a white or green ball =

20

15

=

4

3

(2) No. of balls that are neither green nor red =7

∴ probability of getting a ball that are neither green nor red =

20

7