Bundle: Modern Business Statistics with Microsoft Office Excel, Loose-Leaf Version, 6th + MindTap Business Statistics, 2 terms (12 months) Printed Access Card
6th Edition
ISBN: 9781337589383
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Textbook Question
Chapter 8.2, Problem 11E
For a t distribution with 16 degrees of freedom, find the area, or
- a. To the right of 2.120
- b. To the left of 1.337
- c. To the left of −1.746
- d. To the right of 2.583
- e. Between −2.120 and 2.120
- f. Between −1.746 and 1.746
a.
Expert Solution
To determine
Find the probability to the right of 2.120 with 16 degrees of freedom.
Answer to Problem 11E
The probability to the right of 2.120 with 16 degrees of freedom is 0.025.
Explanation of Solution
Calculation:
The probability to right of 2.120 is
Software procedure:
Step-by-step procedure to obtain the probability value using Excel:
- Open an EXCEL sheet and select the cell A1.
- Enter the formula =T.DIST.RT(2.12,16) in the cell A1.
- Press Enter.
Output obtained using EXCEL software is given below:
From the output, the value of
b.
Expert Solution
To determine
Find the probability to the left of 1.337 with 16 degrees of freedom.
Answer to Problem 11E
The probability to the left of 1.337 with 16 degrees of freedom is 0.90.
Explanation of Solution
Calculation:
The probability to the left of 1.337 is
Software Procedure:
Step-by-step procedure to obtain the probability value using Excel:
- Open an EXCEL sheet and select the cell A1.
- Enter the formula =T.DIST.RT(1.337,16) in the cell A1.
- Press Enter.
Output obtained using EXCEL software is given below:
From the output:
Thus, the value of
c.
Expert Solution
To determine
Find the probability to the left of –1.746 with 16 degrees of freedom.
Answer to Problem 11E
The probability to the left of –1.746 with 16 degrees of freedom is 0.05.
Explanation of Solution
Calculation:
The probability to the left of –1.746 is
Software Procedure:
Step-by-step procedure to obtain the probability value using Excel:
- Open an EXCEL sheet and select the cell A1.
- Enter the formula =T.DIST.RT(–1.746,16) in the cell A1.
- Press Enter.
Output obtained using EXCEL software is given below:
From the output:
Thus, the value of
d.
Expert Solution
To determine
Find the probability to the right of 2.583 with 16 degrees of freedom.
Answer to Problem 11E
The probability to the right of 2.583 with 16 degrees of freedom is 0.01.
Explanation of Solution
Calculation:
The probability of right of 2.583 is,
Software Procedure:
Step-by-step procedure to obtain the probability value using Excel:
- Open an EXCEL sheet and select the cell A1.
- Enter the formula =T.DIST.RT(2.583,16) in the cell A1.
- Press Enter.
Output obtained using EXCEL software is given below:
From the output, the value of
e.
Expert Solution
To determine
Find the probability between –2.120 and 2.120 with 16 degrees of freedom.
Answer to Problem 11E
The probability between –2.120 and 2.120 with 16 degrees of freedom is 0.95.
Explanation of Solution
Calculation:
The probability between –2.120 and 2.120 is
Software Procedure:
Step-by-step procedure to obtain the probability value using Excel:
- Open an EXCEL sheet and select the cell A1.
- Enter the formula =T.DIST.RT(2.120,16) in the cell A1.
- Press Enter.
Output obtained using EXCEL software is given below:
From the output, the value of
The probability between –2.120 and 2.120 is as follows:
Thus, the value of
f.
Expert Solution
To determine
Find the probability between –1.746 and 1.746 with 16 degrees of freedom.
Answer to Problem 11E
The probability between –1.746 and 1.746 with 16 degrees of freedom is 0.90.
Explanation of Solution
Calculation:
The probability between –1.746 and 1.746 is
Software Procedure:
Step-by-step procedure to obtain the probability value using Excel:
- Open an EXCEL sheet and select the cell A1.
- Enter the formula =T.DIST.RT(1.746,16) in the cell A1.
- Press Enter.
Output obtained using EXCEL software is given below:
From the output, the value of
The probability between –1.746 and 1.746 is as follows:
Thus, the value of
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Chapter 8 Solutions
Bundle: Modern Business Statistics with Microsoft Office Excel, Loose-Leaf Version, 6th + MindTap Business Statistics, 2 terms (12 months) Printed Access Card
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