The Probability of Multiple Events

A survey is conducted at Sunny Hills HS regarding the number of text messages sent and received per week.

If a student is chosen at random from this survey, what is the probability that the student texts over 50 messages per week given that the student is in the Junior class? (write as a fraction)

Shuffle a deck of standard cards

Event 1: pull a heart

Event 2: pull a Queen

Are the events Mutually Exclusive?

• Yes

• No

You flip a nickel three times.
Find the probability that all flips will land on tails.

• 1/2

• 1/4

• 1/6

• 1/8

You pick a marble from this bag.
What is the probability you will choose either a black or white marble?

• 3/5

• 9/100

• 1/10

• 2/5

In a standard deck of 52 cards there are 13 diamonds and 13 hearts (red) and 13 spades and 13 clubs (black).  Find the probability of choosing a card at random that is a spade OR a 7

• 1/52

• 1/13

• 4/13

• 17/52

find the probability of choosing a student at random that plays an instrument OR a sport

• 1/2

• 13/20

• 21/20

• 4/5

Given a standard number cube, and the events of rolling an odd number or a 4. Are the events mutually exclusive?

• Not Mutually Exclusive

• Mutually exclusive

• 1/2

• 1/6

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?

• 8/15

• 6/11

• 3/4

• 2/3

If you roll one die, what is the probability of getting an even number or a multiple of 3? Are the events mutually exclusive or not?

• Not mutually exclusive

• Mutually exclusive

If you roll one die, what is the probability of getting an even number or a multiple of 3?

• 2/3

• 1/6

• 1/2

• 5/6