Probability Test

An automobile dealer decides to select a month for its annual sale.  Find the probability that it will be September or October.

• 1/12
• 1/6
• 1/4
• 5/6

At a community swimming pool there are 2 managers, 8 lifeguards, 3 concession stand clerks, and 2 maintenance people.  If a person is selected at random, find the probability that the person is either a lifeguard or a manager.

• 2/3
• 8/15
• 2/15
• not enough information

A jar contains 2 pink, 6 red, and 4 blue marbles. If you pick one marble without looking, what is the probability that the marble you pick will be red or blue?

• 5/6
• 1/2
• 1/3
• 1/6

Every bag of Skittles has 5 colors: red, yellow, green, orange, purple. If 1/4 are yellow and 1/5 are green, then what is the probability of randomly selecting a yellow or green candy?

• 9/20

• 1/20

• 2/9

• 1/4

If the event you were looking for in a probability experiment was to see how often a spinner was to land on a 5 or higher which spinner should you use

• 
• 
• 

how many possible outcomes does this spinner have

• 6

• 9

• 10

What is the probability of rolling 15 with a pair of dice?

• impossible
• unlikely
• equally likely
• likely

Isidro flips a fair coin 40 times. How many times can he expect heads to appear?

• 4
• 10
• 15
• 20

Find the probability of not rolling a 2 on a single die.

• 1/6
• 2/6
• 5/6
• 2

The letters that form the word MATHEMATICS are placed in a bowl. What is the probability of choosing a letter that is a vowel?

• 7/11

• 4/11

• 2/11

• 5/26