Middle School Probability

These 12 shapes are put into a bag.  What is the probablity of reaching into the bag without looking and pulling out a square, NOT replacing the square and pulling out a second square?

• 1/11

• 1/9

• 1/3

These 12 shapes are put into a bag.  If you reach into the bag 60 times, replacing the shape after each time, predict how many times you would pull out a circle.

• 15 times

• 20 times

• 25 times

• 30 times

A jar contains 2 green marbles, 4 blue marbles, 3 yellow marbles, and 2 black marbles. A marble is chosen at random from the jar and replaced. Then a second marble is chosen at random. Find the probability of the first marble being green and the second marble being yellow.

• 4/121

• 8/121

• 3/121

• 6/121

In a survey, 100 middle school students were asked which social media platform they preferred. The results are shown in the table above.

What is the probability that a student prefers TikTok?

CHECK ALL THAT APPLY

• 72 out of 100

• 72%

• 0.72

• 72/100

You pick a marble from this bag.

What is the probability you will choose either a black or white marble?

If the spinner is spun twice, what is the probability that the arrow will land on 1 and then on 8?

• 1/8

• 1/4

• 1/64

• 1/32

If I spin 35 times, how many times would I land on yellow? *Hint: Set up a proportion.

While standing outside of the school waiting to go home, you notice that 3 out of every 12 students leaving school are on their cell phones.  What is the probability that the next student leaving school will NOT be on his or her cell phone?

• 25%

• 30%

• 75%

• 70%

150 people were polled on their favorite sport.  Based on the table, if you asked only 25 people what their favorite sport is, how many would say soccer is their favorite sport?

• 5 people

• 6 people

• 8 people

• 10 people

Based on the results shown in the table, how many white marbles would one expect to draw in a total of 50 draws? (hint:set up a proportion)

• 2

• 5

• 10

• 20