Stats: Hw 1

AVX Home Entertainment, Inc., recently began a "no-hassles" return policy. A sample of 500 customers who recently returned items showed 400 thought the policy was fair, 32 thought it took too long to complete the transaction, and the rest had no opinion. On the basis of this information, make an inference about customer reaction Fair: ___% Too Long: ____% No Opinion: _____% The above data suggest that majority of the customers:_______

80, 6.4, 13.6, believed to be fair

As part of a research project, you need to report the average profit as a percentage of revenue for the #1-ranked corporation in the Fortune 500 for each of the last 10 years.

Population

Statistics 201 is a course taught at a university. Professor Rauch has taught nearly 1,500 students in the course over the past 5 years. You would like to know the average grade for the course based on all 1,500 students. Population or sample?

Population

You are looking forward to graduation 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.

Population

Explain the difference between qualitative and quantitative variables

Qualitative: non numerical Quantitative: numerical

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 the memory. Usually, the advertisers assume relatively short, popular songs 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 your MP3 player.

Sample

Exits along interstate highways were formerly numbered successively from the western or southern border of a state. However, the Department of Transportation has recently changed most of them to agree with the numbers on the mile markers along the highway. What level of measurement are data on the milepost numbers? T or f The newer system provided information on the distance between exits.

ratio true

The Struthers Wells Corporation employs more than 10,000 white-collar workers in its sales offices and manufacturing facilities in the United States, Europe, and Asia. A sample of 300 U.S. workers revealed 120 would accept a transfer to a location outside the United States. On the basis of these findings, write a brief memo to Ms. Wanda Carter, Vice President of Human Services, regarding all white-collar workers in the firm and their willingness to relocate. As a result of these __________ findings, we can conclude that _______ % of the white-collar workers would transfer outside the U.S.

sample; 40

A population is an entire set of individuals, objects, or measurements of interest. T or f

true

A sample is a subset taken from a populations True or false.

true

T or F To infer something (i.e. estimate properties) about a population, we usually take a sample from the population.

true

T or f Statistics are used as a basis for making decisions.

true

Exits along interstate highways were formerly numbered successively from the western or southern border of a state. However, the Department of Transportation has recently changed most of them to agree with the numbers on the mile markers along the highway. What level of measurement were data on the consecutive exit numbers?

Ordianal

T or F Statistics is used to report the summary results of market surveys.

True