Exam 3: Relationships Between Categorical Variablescontingency Tables
Exam 1: Stats Starts Here18 Questions
Exam 2: Displaying and Describing Data24 Questions
Exam 3: Relationships Between Categorical Variablescontingency Tables29 Questions
Exam 4: Understanding and Comparing Distributions28 Questions
Exam 5: The Standard Deviation As a Ruler and the Normal Model29 Questions
Exam 6: Scatterplots, Association, and Correlation26 Questions
Exam 7: Linear Regression30 Questions
Exam 8: Regression Wisdom18 Questions
Exam 9: Multiple Regression16 Questions
Exam 10: Sample Surveys28 Questions
Exam 11: Experiments and Observational Studies20 Questions
Exam 12: From Randomness to Probability20 Questions
Exam 13: Sampling Distribution Models and Confidence Intervals for Proportions20 Questions
Exam 14: Confidence Intervals for Means19 Questions
Exam 15: Testing Hypotheses17 Questions
Exam 16: More About Tests and Intervals20 Questions
Exam 17: Comparing Groupspaired16 Questions
Exam 18: Samples and Blocks14 Questions
Exam 19: Comparing Counts20 Questions
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A regional survey was carried out to gauge public opinion on the controversial Arizona
Immigration Law (results shown below).What percent oppose the law? Response Democrat Republican Independent Favor 50 93 35 Oppose 85 45 60 Don't Know 5 7 20
Free
(Multiple Choice)
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Correct Answer:
A
Accenture, a consulting firm, conducted an online survey of 500 US consumers from in 2013. Response Male Female Too busy to shop earlier 115 75 More time to save for gifts 50 80 Better discounts available 65 20 Part of the holiday tradition 15 5 None of the above 120 60 What percentage of men were felt that better discounts were available on "Black Friday"?
Free
(Multiple Choice)
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Correct Answer:
D
A regional survey was carried out to gauge public opinion on the controversial Arizona
Immigration Law (results shown below).How many respondents are Republican and favor
The law? Response Democrat Republican Independent Favor 50 93 35 Oppose 85 45 60 Don't Know 5 7 20
Free
(Multiple Choice)
4.7/5
(41)
Correct Answer:
A
Accenture, a consulting firm, conducted an online survey of 500 US consumers in September 2013.Based on their response to the question "What is your motive for shopping late in the
Season?" which of the following would be appropriate method(s) for displaying the male
Only data shown in the table? Response Male Female Too busy to shop earlier 115 75 More time to save for gifts 50 80 Better discounts available 65 20 Part of the holiday tradition 15 5 None of the above 120 60
(Multiple Choice)
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A regional survey was carried out to gauge public opinion on the controversial Arizona
Immigration Law.Based on the results displayed in the table below, what percent of
Respondents is Independent?
Response Democrat Republican Independent Favor 50 93 35 Oppose 85 45 60 Don't Know 5 7 20
(Multiple Choice)
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To determine if people's preference in dogs had changed in the recent years, organizers of a local
dog show asked people who attended the show to indicate which breed was their favorite. This
information was compiled by dog breed and gender of the people who responded. The table
summarizes the responses.
-Identify the variables and tell whether each is categorical or quantitative.
Female Male Total Yorkshire Terrier 73 59 Dachshund 49 47 Golden Retriever 58 33 Labrador 37 41 Dalmatian 45 28 Other breeds 86 67 Total
(Essay)
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A large national retailer of electronics conducted a survey to determine consumer preferences
For various brands of digital cameras and the data are summarized in the table shown below.
Of the consumers who prefer Olympus, what percentage is female? Female Male Total Cannon Power Shot 73 59 Nikon Cool Pix 49 47 Sony Cyber Shot 58 33 Panasonic Lumix 35 30 Fujifilm Finepix 45 28 Olympus S/V 37 41 Other Brands 86 67 Total
(Multiple Choice)
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In May, 2010, the Pew Research Center for the People & the Press carried out a national
Survey to gauge opinion on the Arizona Immigration Law.Responses (Favor, Oppose, Don't
Know) were examined according to groups defined by political party affiliation (Democrat,
Republican, Independent).Which of the following would be appropriate for displaying these
Data?
(Multiple Choice)
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To determine if people's preference in dogs had changed in the recent years, organizers of a local
dog show asked people who attended the show to indicate which breed was their favorite. This
information was compiled by dog breed and gender of the people who responded. The table
summarizes the responses.
-Do you think the breed selection is independent of gender? Give statistical evidence to
support your conclusion.
(Essay)
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(36)
To determine if people's preference in dogs had changed in the recent years, organizers of a local
dog show asked people who attended the show to indicate which breed was their favorite. This
information was compiled by dog breed and gender of the people who responded. The table
summarizes the responses.
-Find each percent.
a. What percent of the responses were from males who favor Labradors?______
b. What percent of the male responses favor Labradors?__________
c. What percent of the people who choose Labradors were males?_________
(Essay)
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A regional survey was carried out to gauge public opinion on the controversial Arizona
Immigration Law (results shown below).Of respondents who oppose the law, what percent
Is Democrat?
Response Democrat Republican Independent Favor 50 93 35 Oppose 85 45 60 Don't Know 5 7 20
(Multiple Choice)
4.8/5
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Has the percentage of young girls drinking milk changed over time? The following table is consistent with the results from "Beverage Choices of Young Females: Changes and Impact on Nutrient Intakes" (Shanthy A. Bowman, Journal of the American Dietetic Association, 102(9), pp. 1234-1239):
-What is the marginal distribution of milk consumption?

(Essay)
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Has the percentage of young girls drinking milk changed over time? The following table is consistent with the results from "Beverage Choices of Young Females: Changes and Impact on Nutrient Intakes" (Shanthy A. Bowman, Journal of the American Dietetic Association, 102(9), pp. 1234-1239):
-a. What percent of the young girls reported that they drink milk? ______
b. What percent of the young girls were in the 1989-1991 survey?_______
c. What percent of the young girls who reported that they drink milk were in the 1989-1991 survey?_____
d. What percent of the young girls in 1989-1991 reported they drink milk?_______

(Essay)
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To determine if people's preference in dogs had changed in the recent years, organizers of a local
dog show asked people who attended the show to indicate which breed was their favorite. This
information was compiled by dog breed and gender of the people who responded. The table
summarizes the responses.
-What is the marginal distribution of breeds?
(Essay)
4.8/5
(38)
A large national retailer of electronics conducted a survey to determine consumer preferences
For various brands of digital cameras and the data are summarized in the table shown below. Female Male Total Cannon Power Shot 73 59 Nikon Cool Pix 49 47 Sony Cyber Shot 58 33 Panasonic Lumix 35 30 Fujifilm Finepix 45 28 Olympus S/V 37 41 Other Brands 86 67 Total
Of the consumers who are male, the percentage who prefer Sony is
(Multiple Choice)
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A company interested in the health of its employees started a health program including
Monitoring blood pressure.Based on age, employees were categorized according to ranges of
Blood pressure by age intervals.Data are shown in the table below. BP Under 30 - Over Total Low 27 38 31 96 Normal 48 90 92 230 High 23 59 72 154 Total 98 187 195 480
Of all employees, the percentage who are over 50 and have high blood pressure is
(Multiple Choice)
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A regional survey was carried out to gauge public opinion on the controversial Arizona
Immigration Law.The results are displayed in the segmented bar chart below.Which of the
Following statements is true? 

(Multiple Choice)
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Accenture, a consulting firm, conducted an online survey of 500 US consumers from in 2013. Response Male Female Too busy to shop earlier 115 75 More time to save for gifts 50 80 Better discounts available 65 20 Part of the holiday tradition 15 5 None of the above 120 60 What percentage of those who thought that better discounts were available on "Black Friday"
Were female?
(Multiple Choice)
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The following is a bar chart summarizing consumer preferences for various brands of digital
Cameras.
This bar chart shows

(Multiple Choice)
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To determine if people's preference in dogs had changed in the recent years, organizers of a local
dog show asked people who attended the show to indicate which breed was their favorite. This
information was compiled by dog breed and gender of the people who responded. The table
summarizes the responses.
-Which of the W's are unknown for these data?
(Essay)
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