Introduction to probability

Which of the following is equivalent to 3/4?

• 75%

• 34%

• 133%

• 3/4%

Answer explanation

To convert a fraction to a percent divide the denominator into the numerator and then multiply by 100

Which of the following is a probability model is correct?

• 
• 

How do you know if a table/model for a given set of probability is uniform or non-uniform probability?

Emily is a very good student. She is more likely to attend class than to miss class. Which could be the probability that she misses class tomorrow?

• -0.4

• 0.1

• 0.7

• 1.2

Ilana drew a marble at random from a bag containing 4 blue, 3 red, 2 yellow, and 5 green marbles. What is the probability that she picked a marble that is not red?

• 3/14

• 11/14

• 3/11

• 5/7

Vidriana rolled a number cube 96 times. Her results are shown in the table.

What is the experimental probability of rolling an even number?

• 46/50

• 48/96

• 50/96

• 42/96

What is the greatest probability in any experiment

• 0

• 0.01

• 1

• 100

A list of all the possible outcomes of a probability experiment is called _________________________.

How can you check to see that your probability model is correct/complete?

• all the possible outcomes have equivalent probability

• each of the possible outcomes is different from the others

• The probabilities of all the possible outcomes have a sum of 1

• The sample space does not contain any gaps in probabilities

If you know that there are 52 cards in a new deck of cards, and that there are 4 suites (clubs, spades, diamonds, hearts), and that each suite has 4 face cards (king, queen, jack, and ace), what is the probability of drawing a face card from the deck?

• 4/13

• 4/52

• 1/52

• none of the above