Stats: Modeling the World Nasta Edition Grades 9-12
Stats: Modeling the World Nasta Edition Grades 9-12
3rd Edition
ISBN: 9780131359581
Author: David E. Bock, Paul F. Velleman, Richard D. De Veaux
Publisher: PEARSON
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Chapter 5, Problem 41E

a)

To determine

To identify two variables.

a)

Expert Solution
Check Mark

Answer to Problem 41E

Information received or not and the time until he or she saw the 3D image.

Explanation of Solution

Given:

  Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 5, Problem 41E , additional homework tip  1

The two variables discussed in this study are information received or not and the time until he or she saw the 3D image.

b)

To determine

To specify the variables in quantitative or categorical variables with units.

b)

Expert Solution
Check Mark

Answer to Problem 41E

The variables “information receiver or not” is a categorical and “fusion time” is a quantitative.

Explanation of Solution

Given:

  Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 5, Problem 41E , additional homework tip  2

Categorical variable: It describes the quality or characteristics of the data. It does not have numeric or quantitative meaning.

Quantitative variable: The variable expressed numerically and it has numeric meaning.

The variables “information receiver or not” is a categorical and “fusion time” is a quantitative.

c)

To determine

To compare the distributions.

c)

Expert Solution
Check Mark

Explanation of Solution

Given:

  Stats: Modeling the World Nasta Edition Grades 9-12, Chapter 5, Problem 41E , additional homework tip  3

The shape of the distributions is left skewed for both. Therefore, the center of the NV group was lower than the center of the VV group. The spread of the NV groups was higher than the spread of the VV group. This experiment shows that the people who received no information needed, in general more time to see the 3D image.

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