Ch. 3 Probability Test review

What is the difference between an outcome and an event? Choose the correct answer below.

• A. An event is the result of a single probability experiment. An outcome is a set of one or more possible events.

• B. An outcome is the result of a single probability experiment. An event is the set of all possible outcomes.

• C. An event is the result of a single probability experiment. An outcome is the set of all possible events.

• D. An outcome is the result of a single probability experiment. An event is a set of one or more possible outcomes.

Explain why the statement is incorrect. The probability of rain tomorrow is 147%. What makes the statement incorrect?

• A. An event needs to have more than one possible outcome.

• B. The chance of rain is always more than 100%.

• C. The probability of an event must be contained in the interval [1,100].

• D. The probability of an event cannot exceed 100%.

Determine whether the statement is true or false. You toss a coin and roll a die. The event "tossing tails and rolling a 3 or 5" is a simple event. Determine the most appropriate conclusion.

• True

• False

Determine whether the statement is true or false. If it is false, rewrite it as a true statement. You toss a fair coin nine times and it lands tails up each time. The probability it will land heads up on the tenth flip is greater than 0.5. Choose the correct answer below.

• The statement is false. The correct statement is "You toss a fair coin nine times and it lands tails up each time. The probability it will

• The statement is true.

A random number generator is used to select an integer from 1 to 100 (inclusively). What is the probability of selecting the integer 177? The probability is ________. (Type an integer or a decimal. Do not round.)

• 0

• 0.01

• 0.1

• 1

What is the difference between independent and dependent events? Choose the correct answer below.

• A. Two events are independent if they can occur at the same time. Two events are dependent if only one of the two events can occur.

• B. Two events are independent when the occurrence of one event affects the probability of the occurrence of the other event. Two events are dependent when the occurrence of one event does not affect the probability of the occurrence of the other event.

• C. Two events are independent when the occurrence of one event does not affect the probability of the occurrence of the other event.

• D. Two events are independent if only one of the two events can occur. Two events are dependent if they can occur at the same time.

(a) List an example of two events that are independent. Choose the correct answer below.

• A. Selecting a queen from a standard deck, not replacing it, and then selecting a queen from the deck

• B. Rolling a die twice

• C. Not putting money in a parking meter and getting a parking ticket

• D. A father having hazel eyes and a daughter having hazel eyes

(b) List an example of two events that are dependent. Choose the correct answer below.

• A. Selecting a ball numbered 1 through 12 from a bin, replacing it, and then selecting a second numbered ball from the bin

• B. Rolling a die twice

• C. Tossing a coin and getting a head, and then rolling a six-sided die and obtaining a 6

• D. Drawing one card from a standard deck, not replacing it, and then selecting another card

What does the notation P(B|A) mean? Choose the correct answer below.

• A. The probability of event B occurring, divided by the probability of event A occurring

• B. The probability of both event A and event B occurring

• C. The probability of event B occurring, given that event A has occurred

• D. The probability of event A occurring, given that event B has occurred

For the given pair of events, classify the two events as independent or dependent. Finding you are out of gas Finding you are out of window washer fluid Choose the correct answer below.

• The two events are dependent because the occurrence of one does not affect the probability of the occurrence of the other.

• The two events are independent because the occurrence of one affects the probability of the occurrence of the other.

• The two events are independent because the occurrence of one does not affect the probability of the occurrence of the other.

• The two events are dependent because the occurrence of one affects the probability of the occurrence of the other.