00 14 Cocaine Traces in Spanish Currency, continued. The plus four method is particularly useful when there are no successes or no failures in the data. The study of Spanish currency described in Example 22.8 found that in Seville, all 20 of a sample of 20 euro bills had cocaine traces. (a) What is the sample proportion p of contaminated bills? What is the large- sample 95% confidence interval for p? It's not plausible that every Seville has cocaine traces, as this interval says. bill in (b) Find the plus four estimate p and the plus four 95% confidence interval for p. These results are more reasonable in this situation.
00 14 Cocaine Traces in Spanish Currency, continued. The plus four method is particularly useful when there are no successes or no failures in the data. The study of Spanish currency described in Example 22.8 found that in Seville, all 20 of a sample of 20 euro bills had cocaine traces. (a) What is the sample proportion p of contaminated bills? What is the large- sample 95% confidence interval for p? It's not plausible that every Seville has cocaine traces, as this interval says. bill in (b) Find the plus four estimate p and the plus four 95% confidence interval for p. These results are more reasonable in this situation.
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
22.14 is what needs answerd the other is just info for it use calculator method a ti83 or ti 84
![STATE: Cocaine users
euro paper currency in Spain often shows traces of cocaine. Researchers collected
PLAN: Take p to be the proportion of bills that show cocaine traces. That is, a
"success" is a bill that shows cocaine traces. Give a 95% confidence interval for p.
the proportion of all euro bills in Madrid that have traces of cocaine.
to snort cocaine or had been contaminated in currency-sorting machines. Estimate
of cocaine.16 The researchers note that we can't tell whether the bills had been used
20 euro bills in each of several Spanish cities. In Madrid, 17 out of 20 bore traces
paper currency bill. Spain has a high rate of cocaine use, so it's not surprising that
EXAMPLE 22.8 Cocaine Traces in Spanish Currency
Cocaine users commonly snort the powder up the nose through a rolled-up
urrency bill. Spain has a high rate of cocaine use, so it's not surprising that
paper
euro perills in each of several Spanish cities. In Madrid, 17 out of 20 bore traces
4step
The researchers note that we can't tell whether the bills had been used
proportion of all euro bilis in Madrid that have traces of cocaine.
SOLVE: It is not clear how the bills in the sample were selected, so we don't know
we have an SRS. We will act as though we have an SRS, but we proceed with cau-
on The conditions for use of the large-sample interval are not met because there
e only three failures. To apply the plus four method, add two successes and two
ures to the original data. The plus four estimate of p is
17 + 2 19
= 0.7917
%3D
20 + 4 24
tion is optional.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F754ba9cb-05fb-45a9-858f-cfd568f02df7%2Fba472a4b-7173-42e2-aed9-bd0d8f125838%2F0da596_processed.jpeg&w=3840&q=75)
Transcribed Image Text:STATE: Cocaine users
euro paper currency in Spain often shows traces of cocaine. Researchers collected
PLAN: Take p to be the proportion of bills that show cocaine traces. That is, a
"success" is a bill that shows cocaine traces. Give a 95% confidence interval for p.
the proportion of all euro bills in Madrid that have traces of cocaine.
to snort cocaine or had been contaminated in currency-sorting machines. Estimate
of cocaine.16 The researchers note that we can't tell whether the bills had been used
20 euro bills in each of several Spanish cities. In Madrid, 17 out of 20 bore traces
paper currency bill. Spain has a high rate of cocaine use, so it's not surprising that
EXAMPLE 22.8 Cocaine Traces in Spanish Currency
Cocaine users commonly snort the powder up the nose through a rolled-up
urrency bill. Spain has a high rate of cocaine use, so it's not surprising that
paper
euro perills in each of several Spanish cities. In Madrid, 17 out of 20 bore traces
4step
The researchers note that we can't tell whether the bills had been used
proportion of all euro bilis in Madrid that have traces of cocaine.
SOLVE: It is not clear how the bills in the sample were selected, so we don't know
we have an SRS. We will act as though we have an SRS, but we proceed with cau-
on The conditions for use of the large-sample interval are not met because there
e only three failures. To apply the plus four method, add two successes and two
ures to the original data. The plus four estimate of p is
17 + 2 19
= 0.7917
%3D
20 + 4 24
tion is optional.
![or
2014 Cocaine Traces in Spanish Currency, continued. The plus four method
is particularly useful when there are no successes or no failures in the data. The
study of Spanish currency described in Example 22.8 found that in Seville, all
20 of a sample of 20 euro bills had cocaine traces.
(a) What is the sample proportion p of contaminated bills? What is the large-
sample 95% confidence interval for p? It's not plausible that every bill in
Seville has cocaine traces, as this interval says.
(b) Find the plus four estimate p and the plus four 95% confidence interval
for p. These results are more reasonable in this situation.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F754ba9cb-05fb-45a9-858f-cfd568f02df7%2Fba472a4b-7173-42e2-aed9-bd0d8f125838%2Fljkeqew_processed.jpeg&w=3840&q=75)
Transcribed Image Text:or
2014 Cocaine Traces in Spanish Currency, continued. The plus four method
is particularly useful when there are no successes or no failures in the data. The
study of Spanish currency described in Example 22.8 found that in Seville, all
20 of a sample of 20 euro bills had cocaine traces.
(a) What is the sample proportion p of contaminated bills? What is the large-
sample 95% confidence interval for p? It's not plausible that every bill in
Seville has cocaine traces, as this interval says.
(b) Find the plus four estimate p and the plus four 95% confidence interval
for p. These results are more reasonable in this situation.
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
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 5 steps
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
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](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
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](https://www.bartleby.com/isbn_cover_images/9781119256830/9781119256830_smallCoverImage.gif)
MATLAB: An Introduction with Applications
Statistics
ISBN:
9781119256830
Author:
Amos Gilat
Publisher:
John Wiley & Sons Inc
![Probability and Statistics for Engineering and th…](https://www.bartleby.com/isbn_cover_images/9781305251809/9781305251809_smallCoverImage.gif)
Probability and Statistics for Engineering and th…
Statistics
ISBN:
9781305251809
Author:
Jay L. Devore
Publisher:
Cengage Learning
![Statistics for The Behavioral Sciences (MindTap C…](https://www.bartleby.com/isbn_cover_images/9781305504912/9781305504912_smallCoverImage.gif)
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…](https://www.bartleby.com/isbn_cover_images/9780134683416/9780134683416_smallCoverImage.gif)
Elementary Statistics: Picturing the World (7th E…
Statistics
ISBN:
9780134683416
Author:
Ron Larson, Betsy Farber
Publisher:
PEARSON
![The Basic Practice of Statistics](https://www.bartleby.com/isbn_cover_images/9781319042578/9781319042578_smallCoverImage.gif)
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](https://www.bartleby.com/isbn_cover_images/9781319013387/9781319013387_smallCoverImage.gif)
Introduction to the Practice of Statistics
Statistics
ISBN:
9781319013387
Author:
David S. Moore, George P. McCabe, Bruce A. Craig
Publisher:
W. H. Freeman