Probability and Statistics for Engineers and Scientists
9th Edition
ISBN: 9780321629111
Author: Ronald E. Walpole, Raymond H. Myers, Sharon L. Myers, Keying Ye
Publisher: Prentice Hall
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Question
Chapter 1.7, Problem 13E
(a)
To determine
Find the sample
Find the
(a)
Expert Solution
Answer to Problem 13E
The sample mean is 124.3.
The median is 120.
Explanation of Solution
Calculation:
Step-by-step procedure to obtain the mean and median using MINITAB software:
- Choose Stat > Basic Statistics > Display
Descriptive Statistics . - In Variables enter the column hour.
- Choose option statistics, and select Mean, Median.
- Click OK.
Output obtained using MINITAB software is given below:
From the MINITAB output, the sample mean is 124.3, and the median is 120.
(b)
To determine
Identify the feature in this data set that is responsible for the substantial difference between the two.
(b)
Expert Solution
Explanation of Solution
Step-by-step procedure to obtain the boxplot using MINITAB software:
- Choose Graph > Boxplot.
- Under One Y, choose Simple. Click OK.
- In Graph variables, enter the data of hour.
- Click OK.
Output obtained using MINITAB software is given below:
From the boxplot, it is clear that the observation 175 is an extreme value when compared to the remaining observations.
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Chapter 1 Solutions
Probability and Statistics for Engineers and Scientists
Ch. 1.3 - The following measurements were recorded for the...Ch. 1.3 - According to the journal Chemical Engineering, an...Ch. 1.3 - A certain polymer is used for evacuation systems...Ch. 1.3 - In a study conducted by the Department of...Ch. 1.3 - Twenty adult males between the ages of 30 and 40...Ch. 1.3 - The tensile strength of silicone rubber is thought...Ch. 1.4 - Consider the drying time data for Exercise 1.1 on...Ch. 1.4 - Prob. 8ECh. 1.4 - Exercise 1.3 on page 13 showed tensile strength...Ch. 1.4 - Prob. 10E
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