Question Question 1 2 / 2 points Manuel Banales, Marketing Director of Plano Power Plants,…

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Question 1 2 / 2 points

Manuel Banales, Marketing Director of Plano Power Plants, Inc.'s Electrical Division, is leading a study to identify and assess the relative importance of product features. Manuel directs his staff to design a survey questionnaire and distribution it to all of Plano’s 954 customers. Manuel is ordering a:

1) statistic from the customers

2) census of the customers

3) sample of the customers

4) sorting of the customers

5) parameter of the customers

Question 2 2 / 2 points

A cancer research group was interested in determining the percentage of women 40 years or older that have regularly scheduled mammograms.To accomplish this, they surveyed 500 women in this age group and, based on 155 women that responded affirmatively, estimated the percentage of all women in this age group that have regularly scheduled mammograms. This process is an example of:

1) nonparametric statistics

2) nominal data

3) descriptive statistics

4) inferential statistics

5) census

Question 3 2 / 2 points

Abel Alonzo, Director of Human Resources, is exploring the causes of employee absenteeism at Batesville Bottling during the last operating year.Personnel records for 50 of the plant's 250 employees are selected for  analysis. For this study, the group of 50 employees is a:

1) parameter

2) sample

3) population

4) statistic

5) frame

Question 4 2 / 2 points

The staff of Mr. Wayne Wertz, VP of Operations at Portland Peoples Bank, prepared a frequency histogram of waiting time for walk-in customers. Approximately how many walk-in customers waited at least 6 minutes?  (Note the position of the labels on the x-axis — the first column is the number of customers who waited 1 minute and the last column is the number of customers who waited 10 minutes).

1) 20

2) 30

3) 90

4) 180

5) 200

Question 5 2 / 2 points

The staffs of the accounting and quality control departments rated their respective supervisor's leadership style as either (1) authoritarian or (2) participatory. 68% of the accounting staff rated their supervisor “authoritarian,” and 32% rated him “participatory.” 40% of the quality control staff rated their supervisor “authoritarian,” and 60% rated her “participatory.” The best graphic depiction of these data would be two:

1) histograms

2) frequency polygons

3) ogives

4) pie charts

5) scatter plots

Question 6 2 / 2 points

The following graphic of residential housing data (selling price and size in square feet) is a:

1) scatter plot

2) Pareto chart

3) pie chart

4) cumulative histogram

5) cumulative frequency distribution

Question 7 2 / 2 points

A statistics student made the following grades on five tests: 84, 68, 88, 72, and 72. What is the median grade?

1) 88

2) 72

3) 78

4) 80

5) 82

Question 8 2 / 2 points

The average starting salary for graduates at a university is $25,000 with a standard deviation of $4,000. If a histogram of the data shows that it takes on a bell shape (normally distributed), the empirical rule says that approximately 68% of the graduates would have a starting salary between:

1) $23,000 and $27,000

2) $21,000 and $29,000

3) $19,000 and $31,000

4) $24,000 and $26,000

5) $26,000 and $28,000

Question 10 2 / 2 points

David Desreumaux, VP of Human Resources of American First Banks (AFB), is reviewing the employee training programs of AFB banks. His staff compiled the following table of regional statistics on teller training hours.


Southeast Region

Southwest Region










Standard Deviation



What can David conclude from these statistics?

1) The Southeast distribution is symmetrical.

2) The Southwest distribution is skewed to the left.

3) The Southwest distribution has the greater dispersion.

4) The Southwest distribution is symmetrical.

5) The two distributions are symmetrical.



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