Question 1

Which of the following best describes a probability experiment?

Accepted Answer

An action or trial through which specific results (counts, measurements, or responses) are obtained.

Question 2

Given a probability experiment where a die is rolled, what is the sample space?

Accepted Answer

$${1, 2, 3, 4, 5, 6}$$

Question 3

If you toss a coin and then roll a six-sided die, how many outcomes are in the sample space?

Accepted Answer

$$12$$

Question 4

Which of the following is a simple event?

Accepted Answer

Rolling a 3 on a six-sided die.

Question 5

A college ID number consists of 8 digits, each digit can be 0-9 and digits can repeat. How many possible ID numbers are there?

Accepted Answer

$$10^8$$

Question 6

What is the probability of rolling a 7 on a standard six-sided die?

Accepted Answer

$$0$$

Question 7

If you roll a six-sided die, what is the probability of rolling a number less than 5?

Accepted Answer

$$\frac{4}{6}$$

Question 8

A company surveyed 320 people about traffic congestion. 123 said it was a serious problem. What is the empirical probability that the next person says it is a serious problem?

Accepted Answer

$$\frac{123}{320}$$

Question 9

Which type of probability is based on intuition, educated guesses, and estimates?

Accepted Answer

Subjective probability

Question 10

What is the probability of winning a 1000-ticket raffle with one ticket, assuming each ticket has an equal chance?

Accepted Answer

$$\frac{1}{1000}$$

Question 11

According to the law of large numbers, what happens as an experiment is repeated many times?

Accepted Answer

The empirical probability approaches the theoretical probability.

Question 12

Which of the following is NOT a valid probability rule?

Accepted Answer

The probability of an event can be greater than 1.

Question 13

If a probability model lists the probabilities of all outcomes as $$0.2$$, $$0.3$$, $$0.1$$, and $$0.4$$, is it valid?

Accepted Answer

Yes, because the sum is $$1.$$

Question 14

Using the Fundamental Counting Principle, how many different meals are possible if you choose 3 salads, 6 main dishes, and 4 desserts?

Accepted Answer

$$3 	imes 6 	imes 4 = 72$$

Question 15

A probability experiment consists of determining a person's blood type (A, B, AB, O) and Rh-factor (positive, negative). How many outcomes are in the sample space?

Accepted Answer

$$8$$

Question 16

Which statement is an example of empirical probability?

Accepted Answer

The probability that a voter chosen at random will vote Republican is 0.15, based on a survey.

Question 17

If you toss a coin and spin a spinner numbered 1-8, what is the probability of getting a tail and spinning an odd number?

Accepted Answer

$$\frac{4}{16}$$

Question 18

Which of the following is a classical probability?

Accepted Answer

The probability of winning a 1000-ticket raffle with one ticket.

Question 19

If an event consists of more than one outcome, what is it called?

Accepted Answer

Not a simple event

Question 20

If you select one manufacturer (Ford, GM, Honda), one car size (compact, midsize), and one color (white, red, black, green), how many different car selections are possible?

Accepted Answer

$$3 	imes 2 	imes 4 = 24$$

Probability Rules and Probability Experiments: Section 5.1 Study Notes

스터디 가이드 - 연습 문제

학습 가이드 - 플래시카드