Introductory Statistics
1st Edition
ISBN: 9781938168208
Author: Barbara Illowsky, Susan Dean
Publisher: OpenStax College
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Textbook Question
Chapter 5, Problem 17P
Use the following information to answer the next ten questions. The data that follow are the square footage (In 1,000 feet squared) of 28 homes.
1.5 | 2.4 | 3.6 | 2.6 | 1.6 | 2.4 | 2.0 |
3.5 | 2.5 | 1.8 | 2.4 | 2.5 | 3.5 | 4.0 |
2.6 | 1.6 | 2.2 | 1.8 | 3.8 | 2.5 | 1.5 |
2.8 | 1.8 | 4.5 | 1.9 | 1.9 | 3.1 | 1.6 |
Table 5.4
The sample
The distribution can be written as X — U( 1.5, 3.5).
In this distribution, outcomes are equally likely. What does this mean?
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The data that follow are the square footage (in 1,000 feet squared) of 28 homes.
1.5
2.4
3.6
2.6
1.6
2.4
2.0
3.5
2.5
1.8
2.4
2.5
3.5
4.0
2.6
1.6
2.2
1.8
3.8
2.5
1.5
2.8
1.8
4.5
1.9
1.9
3.1
1.6
The sample mean = 2.50 and the sample standard deviation = 0.8302.The distribution can be written as
X ~ U(1.5, 4.5).
What is the 80th percentile of square footage for homes? (Enter an exact number as an integer, fraction, or decimal.) thousand feet squared
Which formula is equal to the given percentile?
The data that follow are the square footage (in 1,000 feet squared) of 28 homes.
1.5
2.4
3.6
2.6
1.6
2.4
2.0
3.5
2.5
1.8
2.4
2.5
3.5
4.0
2.6
1.6
2.2
1.8
3.8
2.5
1.5
2.8
1.8
4.5
1.9
1.9
3.1
1.6
The sample mean = 2.50 and the sample standard deviation = 0.8302.The distribution can be written as
X ~ U(1.5, 4.5).
What is the height of f(x) for the continuous probability distribution? (Enter an exact number as an integer, fraction, or decimal.)
The data that follow are the square footage (in 1,000 feet squared) of 28 homes.
1.5
2.4
3.6
2.6
1.6
2.4
2.0
3.5
2.5
1.8
2.4
2.5
3.5
4.0
2.6
1.6
2.2
1.8
3.8
2.5
1.5
2.8
1.8
4.5
1.9
1.9
3.1
1.6
The sample mean = 2.50 and the sample standard deviation = 0.8302.The distribution can be written as
X ~ U(1.5, 4.5).
What is the 80th percentile of square footage for homes? (Enter an exact number as an integer, fraction, or decimal.) thousand feet squared
Chapter 5 Solutions
Introductory Statistics
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