Stats Modeling the World 3rd Edition By David E. Bock – Test Bank

Exam Name___________________________________

MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.

1) Which of these random variables is most likely to have a binomial model? 1)

A) The number of people we check until we find someone with green eyes. B) The number of cards of each suit in a 10-card hand.
C) The number of aces among the top 10 cards in a well-shuffled deck.

D) The number of Democrats among a group of 20 randomly chosen adults. E) The number of cars inspected until we find three with bad mufflers.

Answer: D Explanation: A)

B) C) D) E)

2) Which two events are most likely to be independent? 2) A) having a flat tire, and being late for school

B) having a driver’s license, and having blue eyes
C) getting an A in math, and getting an A in Physics
D) having a car accident, and having 3 inches of snow today E) being a senior, and leaving campus for lunch

Answer: B Explanation: A)

B) C) D) E)

3) Which of these random variables has a geometric model? 3) A) The number of people we check until we find someone with green eyes.

B) The number of cars inspected until we find three with bad mufflers.
C) The number of aces among the top 10 cards in a well-shuffled deck.
D) The number of cards of each suit in a 10-card hand.
E) The number of Democrats among a group of 20 randomly chosen adults.

Answer: A Explanation: A)

B) C) D) E)

1

4) Which two events are most likely to be independent? 4)

A) registering to vote; being left-handed
B) being a senior; going to homeroom
C) having a car accident; having a junior license

D) having 3 inches of snow in the morning; being on time for school E) doing the Statistics homework; getting an A on the test

Answer: A Explanation: A)

B) C) D) E)

5) Which of these has a geometric model? 5) A) The colors of the cars in the grocery store parking lot.

B) The number of hits a baseball player gets in 6 times at bat.
C) The number of black cards in a 10-card hand.
D) The number of cards drawn from a deck until we find all four aces.
E) The number of people we survey until we find someone who owns an iPod.

Answer: E Explanation: A)

B) C) D) E)

6) Which of these has a Geometric model? 6) A) the number of sodas students drink per day

B) the number of aces in a five-card Poker hand
C) the number of people we survey until we find two people who have taken Statistics D) the number of people we survey until we find someone who has taken Statistics
E) the number of people in a class of 25 who have taken Statistics

Answer: D Explanation: A)

B) C) D) E)

7) Which of these has a Binomial model? 7) A) the number of people in a class of 25 who have taken Statistics

B) the number of people we survey until we find someone who has taken Statistics
C) the number of sodas students drink per day
D) the number of people we survey until we find two people who have taken Statistics E) the number of aces in a five-card Poker hand

Answer: A Explanation: A)

B) C) D) E)

2