Transcript Ch 13 Test Audio.pptx

1.
•
In the game of bridge, a player’s hand contains 13 cards. Kevin was dealt a hand containing 5
spades, 3 hearts, 4 diamonds, and 1 club. Which is the correct probability model for picking
one card at random from Kevin’s hand?
a.
b.
c.
d.
2.
____
2. What is the probability of selecting a “B” on the first spinner and a “Z” on the second spinner?
a.
b.
c.
d.
3.
____
3. You want to determine the probability that in a family of 5 children, there will be more girls than boys. Which
describes one trial of a simulation you could use to model this problem?
a. Toss a coin 5 times and count the number of heads.
b. Toss a 6-sided number cube 5 times and count the number of times you get a number less
than 3.
c. Generate 5 random numbers between 0 and 100 and count the number of prime numbers.
d. Draw 5 cards at random from a standard 52-card deck, replacing each card after it is drawn
and count the number of hearts. ( There are an equal number of hearts, spades, diamonds,
and clubs in a deck.)
4.
____
4. Which experiment has a non-uniform probability model?
a. Tossing a fair coin once
b. Randomly guessing the answer to a question on a multiple-choice test that has four answer
choices for each question
c. Spinning a spinner on which all sections are the same size
d. Tossing a pair of number cubes and finding the sum of the numbers that land up
5.
____
5. A six-sided number cube is “weighted” so that the numbers do not all have the same probability of landing
up. The probability model is shown.
Outcome
1
2
3
4
Probability
If the number cube is tossed once, what is P(number greater than 3)?
a.
b.
c.
d.
5
6
6.
____
6. Which is a uniform probability model?
a.
b.
c.
d.
7.
____
7. Reba selects 1 card from each of these 3 piles. What is the probability that she selects 3 even numbers?
a.
b.
c.
d.
8.
____
8. The probability of it raining in a town on a spring day is
Tuesday and not rain next Wednesday?
a.
b.
c.
d. 1
. What is the probability that it will rain next
9.
____
9. A special deck of cards is made up of 20 cards, each with the number 1, 2, 3, 4, or 5 on it. The probability
model for drawing card from this deck is given.
Outcome
1
2
3
4
Probability
If a random card is drawn from this deck, what is P(prime number)?
a.
b.
c.
d.
5
10.
____ 10. Adeline sets her music player to randomly select songs from her collection. She has 9 country songs, 11 jazz
songs, 3 rap songs, and 6 pop songs. What is the probability that the next song is a rap song or a pop song?
a.
b.
c.
d.
11.
____ 11. Avery selects chips from a bag without looking at them. The bag has 5 green chips, 3 red chips, and 7 blue
chips. What is the probability that he selects a red or blue chip?
a.
b.
c.
d.
12.
____ 12. Mia tossed a penny, a nickel, and a dime. Which is a complete tree diagram for all possible outcomes, where
H represents heads and T represents tails?
a.
b.
c.
d.
13.
____ 13. The Computer Club at Highlands Middle School has 6th graders, 7th graders, and 8th graders among its 40
members. The probability model for choosing a club member is given.
Outcome
6th Grader
7th Grader
8th Graders
Probability
If a club member is chosen at random, what is the probability that he or she will not be a 7th grader?
a.
b.
c.
d. 0
14.
15.
16.
17.
18.
•
18.
Jonathan took a 3-question true-false quiz and guessed the answer to each question.
•
a.
Complete the tree diagram. C represents a correct answer and W represents a wrong answer.
b.
List all of the possible outcomes.
c.
In order to figure out how well he should expect to do on the quiz, Jonathan decided to construct a
probability model for answering 0, 1, 2, and 3 questions correctly. Complete the probability model.
Number of Questions
Answered Correctly
0
1
2
Probability
d.
What is the probability of guessing at least 2 answers correctly?
e.
What is the complementary event for “guessing all three questions correctly”?
3