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 

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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

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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

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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.

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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? 

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

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

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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”? 

The possible results of an experimental are called

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