Math 2 NS - Independent and Independent Probability (ELD )

A 6-sided dice is rolled 2 times. Are these events independent or dependent ?

• Independent

• Dependent

Answer explanation

The result of the first dice does not change or influence the result of the second dice.

Tags

CCSS.HSS.CP.A.5

A dice is rolled 2 times. Find P(both greater than 4)

• 1/4

• 4/36

• 1/16

• 2/5

A coin is tossed 4 times. Are these 4 events independent or dependent ?

• Independent

• Dependent

Answer explanation

The result of 1 coin flip does not affect the result of the other coin flips.

Tags

CCSS.HSS.CP.A.5

A coin is tossed 4 times. Find P(Heads on all 4)

• 4/16

• 1/16

• 1/2

• 4/6

Christian is guessing the 4-digit code to his mom's phone. Find P(all 4 digits greater than 5)

• 11/40

• 1/28

• 16/625

• 1/4

Answer explanation

You might have gotten 256/10000, but you needed to simplify this to 16/625 by dividing the top and bottom by 16.

Tags

CCSS.HSS.CP.B.9

A bag contains 3 blue marbles, 3 green marbles, 3 red marbles, and 3 yellow marbles. A marble is chosen at random, not replaced, then another marble is chosen. Are these 2 events independent or dependent ?

• Dependent

• Independent

Tags

CCSS.HSS.CP.A.5

A bag contains 3 blue marbles, 3 green marbles, 3 red marbles, and 3 yellow marbles. A marble is chosen at random, not replaced, then another marble is chosen. Find P(both red)

• 1/25

• 6/132

• 3/12

• 1/15

A bag contains 3 blue marbles, 3 green marbles, 3 red marbles, and 3 yellow marbles. A marble is chosen at random, not replaced, then another marble is chosen. Find P(blue, then red)

• 6/144

• 6/132

• 9/132

• 9/144

How well do you understand independent and dependent events ?

• Understood well

• Understood a little

• Did not understand at all

Tags

CCSS.HSS.CP.A.5