Calculating Probability

Write 6/20 in simplest form.

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• already simplified

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Thirty-six out of 60 students surveyed said they exercised regularly. Express the fraction 36/60 in simplest form.

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A number cube is marked with 1, 2, 3, 4, 5, and 6 on its faces. If you roll the cube one time, what is P(2)?

• 1/6

• 2

• 1/3

• 1/2

An ordinary six-sided die is rolled. What is the probability that a number greater than four is rolled?

• 2/3

• 1/3

• 1/2

• 1/6

Determining the probability of rolling a '4' or '5' on a number cube by examining the number of possible outcomes and the number of ways to roll a '4' or a '5' is an example of ___________.

• outcome probability

• theoretical probabliity

• experimental probability

• sample probability

A spinner numbered 1 through 10 is spun 100 times. The results of the experiment are shown in the table below. What is the experimental probability of spinning an 8?

• 10/100

• 13/100

• 1/100

• 7/100

Choose the situation that could not represent the tree diagram below.

• One dime was tossed twice one after the other.

• One nickel was tossed, then one quarter was tossed.

• A penny, nickel, and dime were tossed at the same time.

• Two pennies were tossed at the same time.

The spinner below is spun and a number cube is tossed. Determine the number of outcomes.

• 36

• 60

• 6

• 12

Which is the best way to answer a 10-question true-or false test?

• flip a coin

• spin a spinner with ten sections

• roll a die

• spin a spinner with four sections

Which is the best way to simulate a 3/5 chance of snow?

• pick a marble out of a bag containing 3 different color marbles

• pick a marble out of a bag containing 3 white marbles and 2 black marbles

• flip a coin

• roll a die roll a die