Quiz: Probability

A laundry basket has 24 t-shirts in it. Four are navy, 12 are red, and the remaining are white. Find the probability of choosing at random (as a fraction in simplest terms).

P(red)=

Mathematical Equivalence

ON

A laundry basket has 24 t-shirts in it. Four are navy, 12 are red, and the remaining are white. Find the probability of choosing at random (as a fraction in simplest terms).

P(white')=

Mathematical Equivalence

ON

A laundry basket has 24 t-shirts in it. Four are navy, 12 are red, and the remaining are white. Find the probability of choosing at random.

P(green)=

Mathematical Equivalence

ON

Mrs. Irons places the names of each of her four children in a hat at one time. She randomly draws a name, replaces it, and draws again. The results are:

1. Ella

2. Jake

3. Alex

4. Alex

5. Jake

6. Joey

7. Alex

8. Ella

9. Alex

10. Jake

That is the theoretical probability of selecting the name Joey? (answer as a fraction in simplest terms)

Mathematical Equivalence

ON

Mrs. Irons places the names of each of her four children in a hat at one time. She randomly draws a name, replaces it, and draws again. The results are:

1. Ella

2. Jake

3. Alex

4. Alex

5. Jake

6. Joey

7. Alex

8. Ella

9. Alex

10. Jake

That is the experimental probability of selecting the name Alex? (answer as a fraction in simplest terms)

Mathematical Equivalence

ON

Students standing in line for lunch were surveyed about their favorite meal. Their responses are shown in the table.

If one student is picked randomly, then which of the following is true?

• The students' favorite meal is half as likely to be pizza than pasta.

• The students' favorite meal is more likely to be fajitas than pizza.

• The students' favorite meal is twice as likely to be pasta than pizza.

• The students' favorite meal is twice as likely to be fajitas than pasta.

At a school assembly, four out of the first 10 students were wearing spirit dots. Based on this information, if 500 students were at the assembly, how many students could be expected to have an spirit dots?

Mathematical Equivalence

ON

Each spinner shown below will be spun one time. Which of the following tree diagrams shows all of the possible outcomes when each spinner is spun once?

• 
• 
• 
• 

Jay can choose to ride the bus, the subway, or take an Uber to travel to work on Monday and Tuesday. Which list shows all the possible outcomes of one day and one method of travel?

• Mon, bus

  Tue, Uber

  Mon, subway

  Tue, bus

  Mon, subway

  Tue, Uber

• Mon, bus

  Mon, subway

  Mon, Uber

  Tue, bus

  Tue, subway

  Tue, Uber

• bus, Uber

  bus, subway

  Uber, bus

  Uber, subway

  subway, Uber

  subway, bus

• Mon, bus

  Mon, subway

  Mon, bus

  Tue, subway

  Tue, bus

  Tue, subway

The airport security randomly selected 24 suitcases from the security line. Of these bags, they screened 7 suitcases. Based on this information, what is the most reasonable prediction for the number of suitcases they will screen in a group of 144?

Mathematical Equivalence

ON