Simulations to Estimate Probabilities Answers

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The students at Southern Junior High School are divided into four homerooms. Benjamin just moved into the school district and will be randomly assigned to one homeroom. Which methods can be used to simulate this situation? Select three options..

A
Flip a coin 4 times, once for each homeroom, with heads up representing being assigned to the homeroom represented by that flip.
B
Draw a marble from a bag containing 5 white marbles, 5 black marbles, 5 red marbles, and 5 green marbles, with each color representing a different homeroom.
C
Use a random number generator with 1, 2, and 12 representing the first homeroom, 7, 9, and 10 representing the second homeroom, 3, 8, and 11 representing the third homeroom, and 4, 5, and 6 representing the fourth homeroom.
D
Roll a number cube with 1 representing the first homeroom, 2 representing the second homeroom, 3 representing the third homeroom, and any other outcome representing the fourth homeroom.
E
Spin a spinner with 8 congruent sections with 2 sections assigned to each homeroom.
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Alaina surveyed students on her bus about their homework.The results are shown in this two-way table.Student Homework Last Night ResponsesHad Homework8Did Not Have Homework4Alaina used this data to design a spinner with 6 congruent sections that predicts whether a randomly selected student had homework last night.How many sections of Alaina’s spinner represent students who did not have homework?

A
2
B
4
C
6
D
8
3

Twelve of the last 16 winners of the school science fair have been seventh grade students. Mona placed 3 red marbles and 1 green marble in a bag to create a simulation to predict whether future science fair winners will be seventh graders. According to Mona’s model, what is the probability that the next 4 winners will all be seventh grade students?

A
StartFraction 3 over 16 EndFraction
Option A
B
StartFraction 81 over 256 EndFraction
Option B
C
Three-fourths
Option C
D
StartFraction 7 over 8 EndFraction
Option D
4

Which statement best describes the use of a simulation to predict the probability that two randomly chosen people will both have their birthdays on a Monday?

A
Randomly generate an integer from 1 to 2 seven times, and the probability is .
Option A
B
Randomly generate an integer from 1 to 2 seven times, and the probability is .
Option B
C
Randomly generate an integer from 1 to 7 two times, and the probability is .
Option C
D
Randomly generate an integer from 1 to 7 two times, and the probability is .
Option D
5

Sixteen of the 24 schools in Ryan’s county are public schools. Ryan used this spinner to predict the probability that the winner of the county spelling bee in each of the next four years will attend a private school.Which set of outcomes from Ryan’s simulation implies that the winner will attend a private school at least three times in that span? Select two options.

Question illustration
A
A-A-A-A
B
B-B-A-B
C
A-B-A-B
D
A-B-B-B
E
B-A-B-A
6

Twelve of the 20 students in Ms. Sarno’s homeroom are female. Each month, Ms. Sarno randomly selects a student to act as “teacher’s helper.”Which simulation best models the selection of female “teacher’s helpers” for January, February, March, and April?

A
A spinner, divided into 5 congruent sectors with three of the sectors representing female students, is spun 12 times.
B
A coin, with heads up representing female students, is flipped 4 times.
C
A bag of 15 marbles, with 9 marbles representing female students, has a marble drawn 4 times with replacement.
D
A number cube, with odd numbers representing female students, is rolled 12 times.
7

Tyler believes that an 8-sided die can be used to predict whether customers at his store will use a coupon when making their purchases, with a roll of 1 indicating a coupon and all other outcomes indicating no coupon. Today, 4 of the first 48 customers in the store used a coupon. How does the experimental probability of a customer using a coupon compare to the theoretical probability of Tyler’s die?

A
The experimental probability is greater than the theoretical probability by more than 2%.
B
The experimental probability is less than the theoretical probability by more than 2%.
C
The experimental probability is greater than the theoretical probability, but within 2%.
D
The experimental probability is less than the theoretical probability, but within 2%.
8

A restaurant owner has found that 80% of her customers return to the restaurant within two weeks. She wants to create a tool that will simulate the habits of her customers and allow her to predict the probability that three of the next four customers to visit her restaurant will return within two weeks.Which spinner simulation uses an appropriate device and has the correct number of trials?

A
a spinner divided into 5 congruent sectors, spun 3 times
B
a spinner divided into 5 congruent sectors, spun 4 times
C
a spinner divided into 2 congruent sectors, spun 3 times
D
a spinner divided into 2 congruent sectors, spun 4 times
9

April and Sanjay are both using tools to simulate the probability that a family with three children will have exactly one girl. April is using a coin, with tails up representing a boy and heads up representing a girl. She flipped the coin three times. Sanjay rolled a number cube three times with odd numbers representing a boy and even numbers representing a girl.Which statement best describes their simulations?

A
Both simulations have the same theoretical probability of a 3-child family having exactly one girl, but their experimental probabilities may differ.
B
The simulations have different theoretical probabilities of a 3-child family having exactly one girl, and the experimental probabilities they generate may differ.
C
The simulations have different theoretical probabilities of a 3-child family having exactly one girl, but their experimental probabilities will be the same.
D
Both simulations have the same theoretical probability of a 3-child family having exactly one girl, and their experimental probabilities will be the same.
10

Theo is using this spinner to predict the favorite movie genre of randomly chosen students in his school.If Theo spins the spinner 60 times, how many times should he expect it to land on “Action”?

Question illustration
A
10
B
12
C
15
D
20

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