Question 1

A teacher has blue and black pens. The teacher has four times the number of blue pens as black pens.

If a pen is chosen at random, what is the probability that it is a black pen?

Accepted Answer

$\frac{1}{5}$

Answer

$\frac{4}{5}$

Answer

$\frac{1}{2}$

Answer

$\frac{1}{4}$

Question 2

If Mollie spins the spinner once, what is the probability she will land on "X"?

Accepted Answer

$\frac{3}{8}$

Answer

$\frac{3}{7}$

Answer

$\frac{3}{5}$

Answer

$\frac{1}{5}$

Question 3

Penny is conducting an experiment with a spinner. The spinner is divided into four equal sections: blue, green, red, and yellow. She is observing how many times the spinner lands in the yellow section.  What should happen to the experimental probability of landing on the yellow section as she conducts more experiments?

Accepted Answer

The experimental probability of landing on the yellow section should get closer to the theoretical probability of landing on the yellow section as she conducts more experiments.

Answer

The experimental probability of landing on the yellow section should go down as she conducts more experiments.

Answer

The experimental probability of landing on the yellow section should get further away from the theoretical probability of landing on the yellow section as she conducts more experiments.

Answer

The experimental probability of landing on the yellow section should go up as she conducts more experiments.

Question 4

Lacrosse players receive a randomly assigned numbered jersey to wear at games. If the jerseys are numbered 0 - 29 what is the probability the first player to be assigned a jersey gets #16?

Accepted Answer

$\frac{1}{30}$

Answer

$\frac{1}{29}$

Answer

$\frac{8}{15}$

Answer

$\frac{8}{16}$

Question 5

A student rolls a six-sided die numbered 1-6 four times and gets an even number on all ​ 4 rolls. The student concludes the die is unlikely ever to land on an odd number.

Which statement about the student’s conclusion is true?

Accepted Answer

The conclusion is not valid because the student does not have a large enough sample size to justify the conclusion.

Answer

The conclusion is valid because the die landed on an even number all of the times the student rolled it.

Answer

The conclusion is valid because rolling a die is a completely random event that cannot be predicted.

Answer

The conclusion is not valid because the die does not land on an even number more than expected.

Related quizzes

Related quizzes