Stats 3.2 Basic Probability Rules

Front

What is the probability of getting any letter that is not A?

Back

3/4

Front

If Mrs. Mack polls the class and asks, "What is your favorite pizza topping?" Suppose that the responses include: 10% cheese; 30% pepperoni; 25% sausage; 5% ham. What percent of the class have another opinion?

Back

30%

Front

The chance of rolling a 2 is 1/6. What is the chance of not rolling a 2?

Back

5/6

Front

When rolling a 6 sided die, what is the probability of rolling either an even number or a 5?

Back

2/3

Front

Danny has 20 chocolates. 5 are milk chocolates, 10 are dark chocolates, and 5 are white chocolates. What is the probability of getting a milk chocolate or a dark chocolate?

Back

3/4

Front

Define probability.

Back

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

Front

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

Back

Probability = (Number of favorable outcomes) / (Total number of outcomes)

Front

What is the complement of an event?

Back

The complement of an event A is the event that A does not occur, denoted as A'. The probability of A' is 1 - P(A).

Front

What is the probability of rolling an odd number on a 6-sided die?

Back

3/6 or 1/2 (The odd numbers are 1, 3, and 5).

Front

If the probability of an event is 0.2, what is the probability of the event not occurring?

Back

0.8 (1 - 0.2 = 0.8).