Probability

Two events A “It will rain tomorrow in Houston” and B “It will rain tomorrow in Galveston” (a city near Houston)

• Not Independent

• Independent

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

Tossing a head on the coin and rolling a 6 on the die

• Dependent

• Independent

• Mutually exclusive

• Not mutually exclusive

Tags

CCSS.HSS.CP.A.5

Clara picks a marble at random, puts it back, and then picks another marble at random.

• Dependent
• Independent

Tags

CCSS.HSS.CP.A.5

Suppose events A and B are independent and P (A and B) is 0.2. Which statement could be true?

• P(A)=0.4, P(B)=0.3, P (A or B) =0.5

• P(A)=0.8, P(B)=0.25

• P(A given B)=0.2, P(B)=0.2

• P(A)=0.15, P(B)=0.05

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

A bag contains 9 green marbles, 5 yellow marbles and 6 red marbles.  You choose one marble.   What is the probability of selecting a green or red marble?  Do you add or multiply probabilities?

• Add
• Multiply

Tags

CCSS.HSS.CP.B.7

Two events are mutually exclusive if:

• they cannot happen at the same time
• they can happen at the same time
• they always happen 
• they never happen 

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4

If you roll one die, what is the probability of getting an odd number or a 4?  Are the events inclusive or mutually exclusive?

• Not Mutually Exclusive 
• Mutually exclusive

Tags

CCSS.HSS.CP.B.7

A coin is tossed and a number cube is rolled. Find the probability, P(heads and 7).

• 1/14

• 1/2

• 0

• 1/7

Identify if the events are independent or dependent, then calculate the probability. Leave as a fraction.

Tags

CCSS.HSS.CP.A.5

You throw two fair dice, one green and one red, and observe the numbers uppermost. Take A: the sum is 7, and B: the red die comes up even. Are these two events independent? (use test for independence)

•   Independent

•   Dependent

Tags

CCSS.HSS.CP.A.2

CCSS.HSS.CP.A.4