Practice Test

Question 1

What is the probability that his model rocket has landed in a grassy area?

Revolt · Accepted Answer

B: 0 point 4

Question 2

What is the probability that the spinner lands on an even number or on the unshaded section?

Revolt · Accepted Answer

A: 3 fifths

Question 3

Given that a randomly chosen person eats breakfast almost every day, what is the probability that the person also buys cereal at least once a month?

Revolt · Accepted Answer

C: 53 over 64

Question 4

Hana has a bag containing one red (R), one blue (B), and one yellow (Y) tile. She draws two tiles out of the bag, one after the other. Which explanation and tree diagram represent a pair of dependent of events?

Revolt · Accepted Answer

A: Once a tile is chosen, it cannot be chosen again:  Image with description A tree diagram with three levels. Level 1 is R with branches of B and Y. Level 2 is B with branches of R and Y. Level 3 is Y with branches of R and B.

Question 5

A coach chooses six out of eight players to go to a skills workshop. If order does not matter, in how many ways can he choose the players for the workshop?

Revolt · Accepted Answer

D: 28

Question 6

Four girls and six boys are in a Spanish club. Three of the people will be chosen at random to represent the group in a photograph. What is the probability that one girl and two boys will be chosen?

Revolt · Accepted Answer

A: 50 percent

Question 7

The manager of a grocery store reports that there is a 12 percent chance that a customer buys apples during a shopping trip, a 5 percent chance that a customer buy apples and carrots, and a 17 percent chance that a customer buys apples or carrots. What is the probability of a customer buying carrots?

Revolt · Accepted Answer

C: 10 point 0  percent

Question 8

Miguel Cabrera has had 369 at bats, and he has 127 hits and 21 home runs. (Note: The home runs are included in the hits data.) If he is challenged to a batting battle, what is the expected score of each at bat if he earns 1 point for each hit that is not a home run and 5 points for each home run?

Revolt · Accepted Answer

C: 0 point 5 7

Question 9

A bag contains 10 red marbles, 15 yellow marbles, 5 green marbles, and 20 blue marbles. Two marbles are drawn from the bag. Which expression represents the probability that one of the marbles is red and the other is blue?

Revolt · Accepted Answer

D: the fraction with numerator open paren sub 10 cap c sub 1 close paren times open paren sub 20 cap c sub 1 close paren and denominator sub 50 cap c sub 2

Question 10

Miriam is visiting five friends in her neighborhood, Louise, Mike, Nicole, Oscar, and Pascal. In each arrangement, the first initial of each person’s name represents that person’s position as he or she is visited by Miriam. Which shows all the outcomes for this event if she visits with Nicole first and Louise last?

Revolt · Accepted Answer

C: NMOPL, NMPOL, NOPML, NOMPL, NPMOL, NPOML

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