Basic Probability Review

Front

Probability can be expressed as a number between _____ and _____.

Back

0 and 1

Front

What is the probability of spinning a fair 8-sided spinner and landing on the 7?

Back

1 / 8

Front

P(not A) = ? (Remember to simplify)

Back

3/4

Front

If you randomly pick from the following M & M colors from a bag, what is the probability that you choose blue? (5 green, 6 yellow, 8 blue, 7 brown)

Back

8/26 or 4/13

Front

A bag contains 5 quarters, 2 dimes, and 4 pennies. What is the probability of picking a quarter?

Back

5/11

Front

Define probability.

Back

Probability is a measure of the likelihood that an event will occur, expressed as a number between 0 (impossible) and 1 (certain).

Front

What is a fair spinner?

Back

A fair spinner is one where each outcome has an equal chance of occurring.

Front

Explain the concept of complementary events in probability.

Back

Complementary events are two outcomes of an event that are mutually exclusive and together cover all possible outcomes. For example, if A is the event of rolling a 3, then not A (P(not A)) is rolling anything but a 3.

Front

What is the formula for calculating the probability of an event?

Back

Probability of an event = (Number of favorable outcomes) / (Total number of possible outcomes).

Front

If a die is rolled, what is the probability of rolling an even number?

Back

3/6 or 1/2 (since the even numbers are 2, 4, and 6).