Exam 1: Defining and Collecting Data

The personnel director at a large company studied the eating habits of the company's employees.The director noted whether employees brought their own lunches to work,ate at the company cafeteria,or went out to lunch.The goal of the study was to improve the food service at the company cafeteria.This type of data collection would best be considered as

A statistics student found a reference in the campus library that contained the median family incomes for all 50 states.She would report her data as being collected using

The Human Resources Director of a large corporation wishes to develop an employee benefits package and decides to select 500 employees from a list of all (N = 40,000)workers in order to study their preferences for the various components of a potential package.Information obtained from the sample will be used to draw conclusions about the true population .

A population frame for a survey contains a listing of 72,345 names.Using a table of random numbers,how many digits will the code numbers for each member of your population contain?

The classification of student class designation (freshman,sophomore,junior,senior)is an example of

SCENARIO 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Unemployed but actively looking for job,3.Unemployed and quit looking for job?" result in

SCENARIO 1-3 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-3,which of the following questions in the survey will NOT likely induce a measurement error?

Which of the following sampling methods will more likely be susceptible to ethical violation when used to form conclusions about the entire population?

A summary measure that is computed to describe a characteristic of an entire population is called

Which of the following yields a cluster sample?

If you randomly select a student from the first row of a business statistics class and then every other fifth student thereafter until you get a sample of 20 students,this is an example of a convenience sample.

Items or individuals in a judgment sample are chosen according to their probability of occurrence.

SCENARIO 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-1,the possible responses to the question "How many people are there in your household?" result in

SCENARIO 1-1 The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products. -Referring to Scenario 1-1,the possible responses to the question "How many Blu-ray players made by other manufacturers have you used? "results in

Which of the following types of samples can you use if you want to make valid statistical inferences from a sample to a population?

SCENARIO 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Scenario 1-2,the possible responses to the question "On the scale of 1 to 100 with 1 being extremely anxious and 100 being total not anxious,rate your level of anxiety in this U.S.economy" are values from a

The manager of the customer service division of a major consumer electronics company is interested in determining whether the customers who have purchased a Blu-ray player made by the company over the past 12 months are satisfied with their products.The population of interest is

A personal computer user survey was conducted.The number of years using a personal computer is an example of a numerical variable.

SCENARIO 1-2 A Wall Street Journal poll asked 2,150 adults in the U.S.a series of questions to find out their view on the U.S.economy. -Referring to Scenario 1-2,the possible responses to the question "How many more months do you think the U.S.economy will require to get out of a recession?" are values from a

At US Data Corporation's web site,they advertised that "Because of our commitment to quality and our vast amount of industry knowledge and experience,we have grown to be one of America's leading providers of mailing lists,marketing data,sales leads and research data.We maintain databases of information on consumers and businesses nationwide that set industry standards for mission critical currency,reliability and accuracy." Trying to reach 500 potential donors for their annual phone donation campaign,a local fire department purchased a list of donors from the company.This list is an example of a