The Information Commons in the main library has 150 personal computers. The probability that any of them …

1) Unstructured interviews are best used for
 

A. measuring worker productivity
B. solving manufacturing defect problems
C. assessing management effectiveness
D. asking individualized questions with no specific order
 

2) A recent study of breast cancer revealed that 13% of the women in the sample used antibiotics more than 500 days in their lifetime. Further, 79% of these “heavy antibiotics users” developed breast cancer. According to the American Cancer Society, one in twelve women will develop breast cancer at some time in her life. Of the numbers mentioned, which are parameters?
 

A. 13% and 79%
B. 13% and one in twelve
C. 79% and 500 days
D. 79% and one in twelve
 

3) Basic business research methods would be used to
 

A. identify factors that affect worker absenteeism
B. evaluate a retail store’s inventory tracking system
C. assess consumer acceptance of a redesigned computer keyboard
D. determine the effect of a 10% price increase on the sale of school supplies
 

4) The collection and summarization of the socioeconomic and physical characteristics of the employees of a particular firm is an example of
 

A. inferential statistics
B. descriptive statistics
C. a parameter
D. an estimation
 

5) Which of the following is an example of statistical inference?
 

A. Counting the number of patients who file malpractice suits after being discharged from hospitals in New York
B. Calculating the mean number of fruit trees damaged by Mediterranean fruit flies in California last year
C. Calculating the mean age of patients discharged from hospitals in New York in 1997
D. Calculating the amount of fly spray needed for your orchard next season
 

6) A logically conjectured statement that describes the relationship between two or more variables and is formulated for empirical testing is a
 

A. hypothesis
B. theory
C. construct
D. thesis statement
 

7) The variable that causes a measurable effect or change on the dependent variable is
 

A. independent
B. dependent
C. intervening
D. moderating
 

8) Survey questionnaires may be effectively used for research to determine
 

A. defect rates in automobile parts coming off a production line
B. the effect of price changes on sales volume
C. the attitudes of prospective voters
D. how temperature and humidity affect concrete cure time
 

9) A company is designing a survey to obtain information on the reliability of a product it sells. To obtain the most valid research information, who should the company send this type of survey to?
 

A. A random sample of its customers
B. Vendors
C. Customers who have bought the product
D. Employees
 

10) The following practice is considered ethical when conducting business research:
 

A. Disclosing some, but not all, financial interests that may affect research
B. Allowing participants to withdraw from a business research project whenever they ask to do so
C. Keeping minimal records of research activities and research design
D. Revealing only a small part of the purpose of the business research project
 

11) If a population distribution is skewed to the right, then given a random sample from that population, one would expect that the
 

A. median is greater than the mean
B. mode is equal to the mean
C. median is less than the mean
D. median is equal to the mean
 

12) Textbook Price Number of Textbooks
$25 to $35 2
$35 to $45 16
$45 to $55 5
$55 to $65 7
$65 to $75 20
 

Estimate the standard deviation of the price of a textbook.
 

A. 14.03
B. 33.85
C. 196.78
D. 729.00
 

13) Textbook Price Number of Textbooks
$25 to $34.99 2
$35 to $44.99 16
$45 to $54.99 5
$55 to $64.99 7
$65 to $74.99 20
 

Estimate the mean price of a textbook.
 

A. $554.00
B. $11.08
C. $60.00
D. $55.40
 

14) A supermarket has determined that daily demand for eggs has a bell-shaped distribution, with a mean of 55 cartons and a standard deviation of six cartons. If the supermarket begins each morning with a stock of 61 cartons of eggs, approximately what percentage of days will there be a surplus of eggs?
 

A. 16%
B. 18%
C. 68%
D. 84%
 

15) Which of these measurement scales has a rank order associated with its use?
 

A. Ratio
B. Ordinal
C. Nominal
D. Likert
 

16) Identify the scale that has no meaningful zero.
 

A. Nominal
B. Ordinal
C. Interval
D. Ratio
 

17) __________ is a measure of the chance that an uncertain event will occur.
 

A. Random experiment
B. Sample space
C. Probability
D. A complement
 

18) The Information Commons in the main library has 150 personal computers. The probability that any of them will require repair on a given day is 0.02. To find the probability that 25 of the computers will require repair, one would use what type of probability distribution?
 

A. Binomial
B. Poisson
C. Normal
D. Hypergeometric