(e) Calculate a point estimate of the population coefficient of variation a/ u. (Round your answer to four decimal places.) 21.0054 State which estimator you used. O O
(e) Calculate a point estimate of the population coefficient of variation a/ u. (Round your answer to four decimal places.) 21.0054 State which estimator you used. O O
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
Related questions
Question
100%
I'm not sure why that one incorrect section is incorrect. I'm guessing it might have something to do with my calculations.
![Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.
9.7
6.3
9.0
7.2
7.8 7.4
7.9
6.8
7.0
5.3
11.8 8.7
8.1
6.8
7.3
11.6
7.7
7.7
6.3 9.7 11.3
7.1
6.5
10.7
7.0 8.1
9.0
(a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion. [Hint: Ex¡ = 219.8.] (Round your answer to three decimal places.)
8.141
MPа
State which estimator you used.
Os/x
(b) Calculate a point estimate of the strength value that separates the weakest 50% of all such beams from the strongest 50%.
7.7
MPa
State which estimator you used.
O s /x
(c) Calculate a point estimate of the population standard deviation o. [Hint: Ex;² = 1865.4.] (Round your answer to three decimal places.)
1.71
MPа
O O](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb05998c5-9aa7-4463-a9df-7f7abe049b9d%2Fb2c98caa-61cb-4776-bac2-05c6e3646730%2F776v09nq_processed.png&w=3840&q=75)
Transcribed Image Text:Consider the accompanying data on flexural strength (MPa) for concrete beams of a certain type.
9.7
6.3
9.0
7.2
7.8 7.4
7.9
6.8
7.0
5.3
11.8 8.7
8.1
6.8
7.3
11.6
7.7
7.7
6.3 9.7 11.3
7.1
6.5
10.7
7.0 8.1
9.0
(a) Calculate a point estimate of the mean value of strength for the conceptual population of all beams manufactured in this fashion. [Hint: Ex¡ = 219.8.] (Round your answer to three decimal places.)
8.141
MPа
State which estimator you used.
Os/x
(b) Calculate a point estimate of the strength value that separates the weakest 50% of all such beams from the strongest 50%.
7.7
MPa
State which estimator you used.
O s /x
(c) Calculate a point estimate of the population standard deviation o. [Hint: Ex;² = 1865.4.] (Round your answer to three decimal places.)
1.71
MPа
O O
![(c) Calculate a point estimate of the population standard deviation o. [Hint: Ex;² = 1865.4.] (Round your answer to three decimal places.)
1.71
MPa
Interpret this point estimate.
This estimate describes the bias of the data.
This estimate describes the linearity of the data.
This estimate describes the center of the data.
This estimate describes the spread of the data.
Which estimator did you use?
s/ x
(d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)
.148
(e) Calculate a point estimate of the population coefficient of variation o/µ. (Round your answer to four decimal places.)
21.0054
State which estimator you used.
s/x](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb05998c5-9aa7-4463-a9df-7f7abe049b9d%2Fb2c98caa-61cb-4776-bac2-05c6e3646730%2Fhxbew3e_processed.png&w=3840&q=75)
Transcribed Image Text:(c) Calculate a point estimate of the population standard deviation o. [Hint: Ex;² = 1865.4.] (Round your answer to three decimal places.)
1.71
MPa
Interpret this point estimate.
This estimate describes the bias of the data.
This estimate describes the linearity of the data.
This estimate describes the center of the data.
This estimate describes the spread of the data.
Which estimator did you use?
s/ x
(d) Calculate a point estimate of the proportion of all such beams whose flexural strength exceeds 10 MPa. [Hint: Think of an observation as a "success" if it exceeds 10.] (Round your answer to three decimal places.)
.148
(e) Calculate a point estimate of the population coefficient of variation o/µ. (Round your answer to four decimal places.)
21.0054
State which estimator you used.
s/x
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, statistics and related others by exploring similar questions and additional content below.Recommended textbooks for you
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
Statistics for The Behavioral Sciences (MindTap C…
Statistics
ISBN:
9781305504912
Author:
Frederick J Gravetter, Larry B. Wallnau
Publisher:
Cengage Learning
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
The Basic Practice of Statistics
Statistics
ISBN:
9781319042578
Author:
David S. Moore, William I. Notz, Michael A. Fligner
Publisher:
W. H. Freeman
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman