**16**

A firm offers routine physical examinations as part of a health service program for its employees. The exams showed that 8% of the employees needed corrective shoes, 15% needed major dental work, and 3% needed both corrective shoes and major dental work. What is the probability that an employee selected at random will need either corrective shoes or major dental work?

.50

.20

.25

1.00

17 Consider a regression analysis, where the correlation coefficient is 0.18. Then, the coefficient of determination is _______.

1.16

.36

.0324

.424

**18**

When data is collected using a qualitative, nominal variable, what is true about a frequency distribution that summarizes the data?

A pie chart can be used to summarize the data.

The number of classes is equal to the number of variables plus 2.

The “5 to the k rule” can be applied.

The upper and lower class limits must be calculated.

**19**

For any chi-square goodness-of-fit test, the number of degrees of freedom is found by ______.

n – k – 1

n + k

n + 1

k -1

**20**

Checklists with several items to be considered by respondents may be subject to _____.

halo effects

leniency effects

primacy effects

recency effects

**21**

The question, “Should products be withdrawn if even one death is associated with its prescribed use, even if no fault for the tampered product accrues to the manufacturer?” is an example of a(n) _____.

unresearchable question

ill-defined problem

strip data mining issue

favored-technique problem

**23**

For a chi-square test involving a contingency table, suppose the null hypothesis is rejected. We conclude that the two variables are __________.

not related

curvilinear

linear

related

**24**

A ranking scale is a scale that _____.

scores an object by making a comparison and determining order among two or more objects

scores an object without making a direct comparison to another object

groups participants

groups concepts according to specific criteri

**25**

The manager of Paul’s fruit and vegetable store is considering the purchase of a new seedless watermelon from a wholesale distributor. Since this seedless watermelon costs $4, will sell for $7, and is highly perishable, he only expects to sell between six and nine of them. What is the opportunity loss for purchasing nine watermelons when the demand is for seven watermelons?

8

0

4

**26**

The weekly incomes of a large group of executives are normally distributed with a mean of $2,000 and a standard deviation of $100. What is the z-score for an income of $2,100?

2.00

-0.90

1.00

1.68

12

**27**

Sam’s Club installed self-checkout stations that can track not only member’s purchases but also packaging problems, as the system uses universal product codes to match the item the shopper has in their cart with its price and inventory level in the store, generating a spreadsheet style report for the researcher. If you consider the scanner as the tool for collecting data for Sam’s researchers, they are doing data entry by ____.

spreadsheet

Optical Character Recognition

Voice recognition

Field editing

**28**

A sales manager for an advertising agency believes that there is a relationship between the number of contacts that a salesperson makes and the amount of sales dollars earned. What is the dependent variable?

number of contacts

sales managers

amount of sales dollars

salesperson

**30**

In multiple regression analysis, when the independent variables are highly correlated, this situation is called __________________.

multicollinearity

homoscedasticity

curvilinearity

autocorrelation

**29**

Which of the following goals should a good survey instrument accomplish?

Encourage each participant to provide accurate responses

Encourage participants to end the survey when they feel they have contributed enough information

Encourage participants to answer only those questions they are comfortable answering

Encourage participants to be succinct in their responses

**13**

A linear trend equation is used to represent time series values when the data are changing by equal what?

percents and proportions

amounts

percents

proportions

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