AnswersTN-Mathematical Reasoning for Decision Making SupplementComparing Two Categorical Variables

Measures of Center and Location Answers

25 verified answers2 views
1
Free Preview

The relative frequency table below displays the proportion of 40 residents in an apartment complex who prefer certain social media sites.Which of the following is the corresponding frequency table?

Question illustration
A
Upstart, 10; Aster, 25; Babble, 35; Techy, 30.
Option A
B
Upstart, 8; Aster, 12; Babble, 10; Techy, 10.
Option B
C
Upstart, 4; Aster, 14; Babble, 10; Techy, 12.
Option C
D
Upstart, 4; Aster, 10; Babble, 14; Techy, 12.
Option D
2
Free Preview

One drive-through car wash facility offers three different types of washes: basic, deluxe, and supreme. The manager of the car wash facility tallies customer selections over three days. Type of Car Wash BasicDeluxeSupremeTotalDayFriday15431977Saturday275222101Sunday23451987 Total6514060265Given that a customer got their car washed on Friday, what is the probability that the customer selected the deluxe car wash?

A
16.2%
B
30.7%
C
52.8%
D
55.8%
3

A college student would like to investigate the prices of large sandwiches offered near college campuses. Two random samples of 50 shops that sell sandwiches near the campuses of two colleges were taken and the price they charge for a large sandwich was recorded. One sample was taken for shops near City College, and one sample was taken for shops near Main Line University. The results are displayed in the cumulative relative frequency histograms below.Which is a correct comparison of sandwich prices based on the histograms?

Question illustration
A
The interval from $11 to $12 contains the most shops for both college locations.
B
More shops charge between $12 and $13 near Main Line University than City College.
C
The median price lies between $10 to $11 for both City College and Main Line University.
D
Fewer shops sell sandwiches for under $10 near City College than near Main Line University.
4

A sample of college students were surveyed about whether they lived on or off campus. The results are displayed below.Which of the following statements is false?

Question illustration
A
The largest percentage of students living on campus is in the 1st-year group.
B
As the number of years in college increases, the percentage of students living on campus increases.
C
As the number of years in college increases, the percentage of students living off campus increases.
D
The difference between percent of students living on or off campus decreases as number of years of college increases.
5

Some students were surveyed about their favorite type music and school-subject preferences. The results are displayed below.

Question illustration
A
There is a much larger preference for science among those who prefer R&B.
B
There is a much larger preference for English among those who prefer rock.
C
There is a much smaller preference for math among those who prefer country.
D
The percentages for class preference are relatively the same among the different music groups.
6

The stemplot below represents the number of bite-size snacks grabbed by 37 students in an activity for a statistics class.

Question illustration
A
The distribution of the number of snacks grabbed is skewed right with a center around 18 and varies from 15 to 45. There are no outliers.
B
The distribution of the number of snacks grabbed is symmetric with a center around 18 and varies from 12 to 45. There are possible outliers at 38, 42, and 45.
C
The distribution of the number of snacks grabbed is skewed left with a center around 18 and varies from 12 to 45. There are possible outliers at 38, 42, and 45.
D
The distribution of the number of snacks grabbed is skewed right with a center around 18 and varies from 12 to 45. There are possible outliers at 38, 42, and 45.
7

The dotplots below display the scores for two classes on a 30-point statistics quiz. Class A has 26 students and Class B has 25 students.Which statement best compares the variability of the quiz scores for Class A and Class B?

Question illustration
A
The scores on the quiz for Class A have more variability than the scores for Class B.
B
The scores on the quiz for Class B have more variability than the scores for Class A.
C
The scores on the quiz for Class A have less variability than the scores for Class B.
D
The scores on the quiz for Class B have about the same variability as the scores for Class A.
8

Alex records the running time—the number of minutes a movie lasts from start to finish—of 50 popular movies. The distribution of times, in minutes, is shown in the histogram below.

Question illustration
A
90–100 minutes
B
100–110 minutes
C
110–120 minutes
D
120–130 minutes
9

In a large city, commuter trains are used to transport people into the downtown area. Trains arrive many times a day to a downtown station. While most are on time, some are late. The table shows on-time data from the past week. Train Status On TimeLateTotalDay of the WeekMonday32840Tuesday241640Wednesday37340Thursday291140Friday302050 Total15258210What percentage of trains were late in this particular week?

A
27.6%
B
38.2%
C
40.0%
D
72.4%
10

The bar graph below shows the eye colors of students in a statistics class.

Question illustration
A
Option
Option A
B
Option
Option B
C
Option
Option C
D
Option
Option D
11

An appliance store sells microwave ovens and has many different styles to choose from. A handout from the store contains details about brand, type (countertop or over-range), number of power settings, and color. Which of the variables is a discrete quantitative variable?

A
brand
B
type
C
power settings
D
color
12

An appliance store sells microwave ovens and has many different styles to choose from. A handout from the store contains details about brand, price, number of power settings, and color. What are the individuals in this data set?

A
microwave ovens
B
brands
C
prices
D
colors
13

Alex records the running time—the number of minutes a movie lasts from start to finish—of 50 popular movies. The distribution of times, in minutes, is displayed in the histogram below.

Question illustration
A
uniform
B
skewed left
C
skewed right
D
roughly symmetric
14

Students apply for admission to different academic programs within a college. Because of space, each program can only accept a limited number of students. The table below shows the acceptance data for a selection of majors in the college. Acceptance Status AcceptedRejectedTotalCollege MajorChemistry721890Business6535100Spanish451560 Total18268250What is the probability that a student was accepted, given that the student applied to the business program?

A
26.0%
B
35.0%
C
35.7%
D
65.0%
15

A state tourist guide provides information on summer vacation towns. Some of the towns and related information are given in the table below.What are the individuals in the data set?

Question illustration
A
towns
B
average temperatures
C
beach access
D
locations
16

A scientist is studying the characteristics of butterflies and collects a random sample of butterflies to measure. Information regarding the wingspan of the butterflies is shown in the histogram below.

Question illustration
A
Wingspan is a categorical variable.
B
Wingspan is a discrete quantitative variable.
C
Wingspan is a continuous quantitative variable.
D
Frequency is a continuous quantitative variable.
17

A random sample of teenagers were surveyed and asked about their favorite sport. The pie chart below displays their responses.

Question illustration
A
Fewer students in the sample listed volleyball as their favorite sport than football.
B
More students in the sample listed lacrosse as their favorite sport than basketball.
C
More students in the sample listed basketball as their favorite sport than volleyball.
D
The highest percentage of teenagers in the sample listed soccer as their favorite sport.
18

A sample of college students was given a survey that asked whether they lived on or off campus. The results are displayed below.

Question illustration
A
There is an association because the distribution of housing differs among the year groups.
B
There is an association because the distribution of housing is the same among the year groups.
C
There is no association because the distribution of housing differs among the year groups.
D
There is no association because the distribution of housing is the same among the year groups.
19

The graph below displays a fire department’s response time, which measures the time from when the alarm is sounded at the firehouse to the time the first fire engine leaves the station.

Question illustration
A
20–30 seconds
B
30–40 seconds
C
70–80 seconds
D
80–90 seconds
20

A sample of adults was asked to choose their favorite sport to watch from a list of four sports. Age Range 18-3031-5051+TotalSportFootball15191751Baseball7121837Basketball1581134Soccer129627 Total494852149What proportion of those surveyed chose basketball as their favorite sport?

A
StartFraction 34 Over 149 EndFraction
Option A
B
StartFraction 15 Over 49 EndFraction
Option B
C
StartFraction 18 Over 52 EndFraction
Option C
D
StartFraction 37 Over 149 EndFraction
Option D

Did you find these answers helpful?

More from this Course

Quiz
25 verified answers

Area of Triangles and Parallelograms

Assignment
22 verified answers

Describing and Comparing Data with Dotplots and Stemplots

Assignment
16 verified answers

Measures of Center and Location