Test Bank for Statistical Reasoning for Everyday Life,

Test Bank for Statistical Reasoning for Everyday Life, 6th edition by Jeff Bennett, William Briggs, Mario Triola Chapter's 1 - 10

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Contents Chapter 1 Speaking of Statistics .................................................................................. 1 Chapter 2 Measurement in Statistics .......................................................................... 13 Chapter 3 Visual Displays of Data ............................................................................. 21 Chapter 4 Describing Data ........................................................................................ 44 Chapter 5 A Normal World ....................................................................................... 63 Chapter 6 Probability in Statistics .............................................................................. 71 Chapter 7 Correlation and Causality .......................................................................... 83 Chapter 8 Inferences from Samples to Populations .................................................. 100 Chapter 9 Hypothesis Testing .................................................................................. 108 Chapter 10 t Tests, Two-Way Tables, and ANOVA ................................................ 123 Answers ...................................................................................................................... 135

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Statistical Reasoning for Everyday Life Chapter 1 (Speaking of Statistics) Exam, form A MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.For problems 1 and 2, determine whether the evaluated group is a population or a sample.1) The average (mean) age of all 63 Associate Professors at Cliffton University is 47 years.

• Population B) Sample

2) A researcher examines the property tax records of 84 property owners in one city and finds that 17% are behind in their tax payments.

• Population B) Sample

For problems 3 and 4, determine whether the given value is a statistic or a parameter.3) The average (mean) age of all 63 Associate Professors at Cliffton University is 47 years.

• Statistic B) Parameter

4) A researcher examines the property tax records of 84 property owners in one city and finds that 17% are behind in their tax payments.

• Statistic B) Parameter

5) Following the Republican National Convention, a poll of 600 voters in a central Illinois community showed that 57% expected the Republican ticket to win over the Democrat ticket no matter whom the Democrats chose for vice-president. The margin of error was 4 percentage points. There are 25,000 registered voters in the community. Which range of values is likely to contain the population parameter?

• 13,250 to 15,250 B) 24,400 to 25,600
• 318 to 366 D) 53% to 61%

6) A poll of 488 citizens of Normal, Illinois, showed that 65% favored strict enforcement of speed limits with a margin of error of 4%. A second poll of 495 citizens of the same town showed that 34% favored strict enforcement of speed limits. Assuming that proper sampling techniques were used in both polls, one may conclude that

• the percent of the population that favors strict enforcement of speed limits is 49.5%  8%.
• the percent of the population that favors strict enforcement of speed limits is 49.5%  4%.
• one or both of the samples may have been unlikely samples from the population.
• the percent of the population that favors strict enforcement of speed limits is 65%  8%.

7) A poll of 700 attendees of the Taste of Chicago showed that 445 attendees, 65% of the sample, believed that the food was overpriced. It is estimated that 1,250,000 people attend the Taste. Although 65% plus or minus 5% of attendees believe that the food is overpriced, the Taste is a popular event.The raw data of the study is (are)

• 65% of the sample.
• 700 attendees, 455 attendees.
• 1,250,000 attendees, 700 attendees, 455 attendees.

D) (60%, 70%)

8) A student wanted to know the favorite lunch at a large high school with a closed campus. What is the first step in conducting a statistical study to answer the question?

• Select a random sample of students.
• Precisely state the goal of the study.
• Select a random sample of students and teachers.
• Select a random sample of teachers. 3 / 4

For problems 9 and 10, determine whether the statement is based on census data or sample data.9) The average (mean) age of all 63 Associate Professors at Cliffton University is 47 years.

• Census data B) Sample data

10) A researcher determines that 17% of 84 property owners in a large city are behind in their tax payments.

• Census data B) Sample data

For problems 11 and 12, select the most representative sample of the population of interest.11) A college student who does laundry infrequently wants to determine the effect of stain remover on what should be white clothes.

• Reports of two friends, one of whom was given stain remover.
• The reports of an internet chatroom on laundry techniques.
• Two loads of personal wash, one with, one without stain remover.
• Two loads of wash, one personal, one of a friend, the stain remover assigned by a coin flip.

12) The father of a junior high school student wants to determine the most popular book among junior high students. Select the sample with the least potential bias.

• A randomly selected group of 10 book sellers
• A randomly selected group of 30 junior high students
• A randomly selected group of 30 junior high students leaving the public library
• The group of 30 junior high students attending the birthday party of the researcher’s child

For problems 13 and 14, identify the sampling technique that was used.13) A sample consists of every 49th student from a group of 496 students.

• Systematic
• Cluster
• Convenience
• Random
• Stratified

14) To avoid working late, a quality-control analyst simply inspects the first 100 items produced in a day.

• Systematic
• Cluster
• Convenience
• Random
• Stratified

For problems 15 and 16, determine whether the study is experimental or observational?15) A marketing firm does a survey to find out how many people use a product. Of the 100 people contacted, 15 said they use the product.

• Observational B) Experimental

16) Two samples of fish are taken from a river upstream and downstream of a factory to measure the effect of pollution from the factory on the fish.

• Observational B) Experimental
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