modified as follows: In a random sample of 55 panels, the average failure time is 2.07 years and the standard deviation is 1.11 years. Find the 91.7% CI for the population mean failure time
modified as follows: In a random sample of 55 panels, the average failure time is 2.07 years and the standard deviation is 1.11 years. Find the 91.7% CI for the population mean failure time
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
Ex 6.14 modified as follows: In a random sample of 55 panels, the average failure time is 2.07 years and the standard deviation is 1.11 years. Find the 91.7% CI for the population mean failure time
![1. Ex 6.14 modified as follows: In a random sample of 55 panels, the average failure
time is 2.07 years and the standard deviation is 1.11 years. Find the 91.7% CI for the
population mean failure time.
320
CHAPTER 6 Inferences base ...
mean tipping point of all daily deal offerings in Korea with
- 95% confidence. Find and practically interpret this interval
estimate. 112 21.46
6.14
....
PANEL
NW
Wear-out of used display panels. Refer to Exercise 4.126
(p. 247) and the study of the wear-out failure time of used
colored display panels purchased by an outlet store. Recall
that prior to acquisition, the panels had been used for about
one-third of their expected lifetimes. The failure times (in
years) for a sample of 50 used panels are reproduced in the
table. An XLSTAT printout of the analysis is shown below.
a. Locate a 95% confidence interval for the true mean
failure time of used colored display panels on the print-
out.
b. Give a practical interpretation of the interval, part a.
c. In repeated sampling of the population of used colored
display panels, where a 95% confidence interval for the
mean failure time is computed for each sample, what
proportion of all the confidence intervals generated will
capture the true mean failure time?
0.01 1.21 1.71 2.30 2.96 0.19 1.22 1.75 2.30 2.98 0.51
1.24 1.77 2.41 3.19 0.57 1.48 1.79 2.44 3.25 0.70 1.54
1.88 2.57 3.31 0.73 1.59 1.90 2.61 1.19 0.75 1.61 1.93
2.62 3.50 0.75 1.61 2.01 2.72 3.50 1.11 1.62 2.16 2.76
3.50 1.16 1.62 2.18 2.84 3.50
Source: Based on T. Z. Irony, M. Lauretto, C. Pereira, and J. M. Stern, "A Weibull
Wearout Test: Full Bayesian Approach," paper presented at Mathematical
Sciences Colloquium, Binghamton University, Binghamton, UK, December 2001.
Summary statistics:
Variable Observations
FailTime
50
Minimum
0.0100
95% confidence interval on the mean:
[1.6776, 2.1924]
6.15 Malicious attacke
Maximum Mean
1.9350
3.5000
Std.
deviation
0.9287
Applying the Concepts-Intermediate
6.16
Si
re
d
a.
b.
bas
6.17 U
lev
fro
as
Ac
ate
sub
to t
ject
Sco
cal 1
cal 1
X =
a. E
p
сс
b. G
c.
R
sti](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1a92b920-e019-446e-b580-35fb69c82c25%2F75f89eaf-9332-40a6-9a6a-c044b8a7a8a7%2F4u0yb1y_processed.png&w=3840&q=75)
Transcribed Image Text:1. Ex 6.14 modified as follows: In a random sample of 55 panels, the average failure
time is 2.07 years and the standard deviation is 1.11 years. Find the 91.7% CI for the
population mean failure time.
320
CHAPTER 6 Inferences base ...
mean tipping point of all daily deal offerings in Korea with
- 95% confidence. Find and practically interpret this interval
estimate. 112 21.46
6.14
....
PANEL
NW
Wear-out of used display panels. Refer to Exercise 4.126
(p. 247) and the study of the wear-out failure time of used
colored display panels purchased by an outlet store. Recall
that prior to acquisition, the panels had been used for about
one-third of their expected lifetimes. The failure times (in
years) for a sample of 50 used panels are reproduced in the
table. An XLSTAT printout of the analysis is shown below.
a. Locate a 95% confidence interval for the true mean
failure time of used colored display panels on the print-
out.
b. Give a practical interpretation of the interval, part a.
c. In repeated sampling of the population of used colored
display panels, where a 95% confidence interval for the
mean failure time is computed for each sample, what
proportion of all the confidence intervals generated will
capture the true mean failure time?
0.01 1.21 1.71 2.30 2.96 0.19 1.22 1.75 2.30 2.98 0.51
1.24 1.77 2.41 3.19 0.57 1.48 1.79 2.44 3.25 0.70 1.54
1.88 2.57 3.31 0.73 1.59 1.90 2.61 1.19 0.75 1.61 1.93
2.62 3.50 0.75 1.61 2.01 2.72 3.50 1.11 1.62 2.16 2.76
3.50 1.16 1.62 2.18 2.84 3.50
Source: Based on T. Z. Irony, M. Lauretto, C. Pereira, and J. M. Stern, "A Weibull
Wearout Test: Full Bayesian Approach," paper presented at Mathematical
Sciences Colloquium, Binghamton University, Binghamton, UK, December 2001.
Summary statistics:
Variable Observations
FailTime
50
Minimum
0.0100
95% confidence interval on the mean:
[1.6776, 2.1924]
6.15 Malicious attacke
Maximum Mean
1.9350
3.5000
Std.
deviation
0.9287
Applying the Concepts-Intermediate
6.16
Si
re
d
a.
b.
bas
6.17 U
lev
fro
as
Ac
ate
sub
to t
ject
Sco
cal 1
cal 1
X =
a. E
p
сс
b. G
c.
R
sti
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 3 steps with 2 images
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