Business Statistics Homework 1

For each of the following, determine whether the group is a sample of a population a. the participants in a study of a new cholesterol drug b. the drivers who received a speeding tickets in Kansas City last month c. those on welfare in Cook County, Illinois d. the 30 stocks reported as a part of the Dow Jones Industrial Average

a, Sample b. population c. population d. sample

a poll solicits a large number of college undergraduates for information on the following variables; the name of their cell phone provider, the number of minutes used last month, and their satisfaction with the service what is the data scale for each of these three variables? a. the cell phone provider b. the number of minutes used c. satisfaction with the service

a. nominal b. ratio c. ordinal

What is the level of measurements for these items related to the newspaper business? a. the number of papers sold each sunday during 2011 b. the departments, such as editorial, advertising, sports, etc c. a summary fo the number of papers sold by county d. the number of years with the paper for each employee

a. ratio b. nominal c. ratio d. ratio

For the following questions, would you collect information using a sample or population a. statistics 201 is a course taught at a university. professor rauch has taught nearly 1500 students in the course over the past 5 years. you would like to know the average grade for the course b. as a part of a research project, you need to report the average profitability of the number one corporation in the fortune 500 for the past 10 years c. you are looking forward and your first job as a salesperson for one of five large pharmaceutical corporations. Planning for your interviews, you will need to know about each company's mission, profitability, products, and markets d. you are shopping for a new MP3 music player such as the Apple iPod. the manufacturers advertise the number of music tracks that can be stored in memory. usually, the advertisers assume relatively short, popular music to estimate the number of tracks that can be stored. you, however, like broadway musical tunes and they are much longer. you would like to estimate how many broadway tunes will fit on you MP3 player.

a. sample b. population c. population d. sample