Probability

You randomly choose a marble from a jar. The jar contains 4 red marbles, 10 blue marbles, 7 green marbles, and 6 yellow marbles. Find the probability of each event.

a. Choosing a green marble 

b. Not choosing a blue marble

c. Choosing a yellow marble 

Tags

CCSS.7.SP.C.7B

You randomly choose one of the tiles shown. Find the number of ways the event can occur. 

a. Choosing an even number

b. Choosing a number divisible by 6 

c. Choosing a number greater than 7

You throw two sticks 15 times and record the results. Use the table to find the experimental probability of each event. 

a. Tossing 2 blue 

b. Tossing 1 blue and 1 pink 

c. Not tossing all blue

Tags

CCSS.7.SP.C.6

You spin the spinner twice. Find the probability of the event. 

a. Spinning a 3 then a 4 

b. Spinning a 2 then a number greater than 2 

c. Describe the likelihood of spinning an odd number then an even number.

A factory produces 90 pairs of designer jeans. An inspector randomly chooses 6 pairs of jeans and discovers that 1 of the pairs of jeans is defective.

a. is the experimental probability that a pair of jeans inspected will be defective?

b. How many of the 90 pairs of jeans would you expect to be defective? 

Tags

CCSS.7.SP.C.6

Use the Fundamental Counting Principle to find the total number of possible outcomes.

Use the Fundamental Counting Principle to find the total number of possible outcomes.

The name of a city is shown below.

C H A T T A H O O C H E E 

James will pick one letter at random from the name of this city. What is the probability that he will pick a letter that can also be found in the name “James”? 

Tags

CCSS.7.SP.C.7B

The possible results of an experimental are called

is a number from 0 to 1 that measures the likelihood that an event will occur

Tags

CCSS.7.SP.C.5