7.PS1a | Theoretical Probability

Use the following slides to complete the notes.
This will be a part of the Unit 9: Probability Note Check

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7.PS1a | Theoretical Probability

*Remember to simplify: 3 out of the 6 sides will be an even number, simplifies to 1 out of 2

​*Remember to simplify: 2 out of the 6 slides will be a number greater than 4.

​*Only 1 out of the 6 sides will be a 5

*There are 2 sides to a coin. 1 out of 2 will be tails. 1 out of 2 will be heads.

Now it's time to practice!

Math Response

Michael is playing a game using the spinner. What is the theoretical probability that the arrow will land on a number greater than 4 on Michael’s next spin? *Put your answer in simplest fraction form.

Type answer here

Correct Answer: \frac{1}{3}

Deg^°

Rad

Math Response

The table shows how many shirts of each color Jillian has in her closet. If Jillian chooses a shirt without looking, what is the theoretical probability it will be blue? *Put your answer in simplest fraction form.

Type answer here

Correct Answer: \frac{7}{30}

Deg^°

Rad

Math Response

A shoe store received a shipment of 120 boxes of sneakers. The number of boxes received in each sneaker size is how in the table. Amelia randomly chooses a box from the shipment. What is the theoretical probability that the box contains a pair that is size 8 or greater? *Put your answer in simplest fraction form.

Type answer here

Correct Answer: \frac{83}{120}

Deg^°

Rad

Math Response

Lucas has 12 red marbles, 6 green marbles, 8 blue marbles, and 4 yellow marbles. He randomly chose a marble from the bag, recorded the color and replaced the marble before choosing again. What is the theoretical probability of selecting a yellow marble?

Type answer here

Correct Answer: \frac{4}{20}

Deg^°

Rad

Math Response

The ratio of boys to girls in a class is 2:3. If a student is chosen at random to be on the pep team, what is the theoretical probability it will be a girl?

Type answer here

Correct Answer: \frac{3}{5}

Deg^°

Rad

Math Response

Find the theoretical probability of spinning an A on the spinner below. *Put your answer in simplest fraction form.

Type answer here

Correct Answer: \frac{1}{4}

Deg^°

Rad