In 2016 the Better Business Bureau settled 76% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.76, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(F) = (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.07 of the population proportion (to 4 decimals)? probability = c. Suppose you select a sample of 490 complaints involving new car dealers. Show the sampling distribution of p. E(F) = (to 2 decimals) (to 4 decimals) d. Based upon the larger sample of 490 complaints, what is the probability that the sample proportion will be within 0.07 of the population proportion (to 4 decimals)?
In 2016 the Better Business Bureau settled 76% of complaints they received in the United States. Suppose you have been hired by the Better Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints settled for new car dealers is 0.76, the same as the overall proportion of complaints settled in 2016. Use the z-table. a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p. E(F) = (to 2 decimals) (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.07 of the population proportion (to 4 decimals)? probability = c. Suppose you select a sample of 490 complaints involving new car dealers. Show the sampling distribution of p. E(F) = (to 2 decimals) (to 4 decimals) d. Based upon the larger sample of 490 complaints, what is the probability that the sample proportion will be within 0.07 of the population proportion (to 4 decimals)?
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
C , d and e part only in 20 mints plz and gets thumb up plzzzz
Transcribed Image Text:In 2016 the Better Business Bureau settled 76% of complaints they received in the United States. Suppose you have been hired by the Better
Business Bureau to investigate the complaints they received this year involving new car dealers. You plan to select a sample of new car dealer
complaints to estimate the proportion of complaints the Better Business Bureau is able to settle. Assume the population proportion of complaints
settled for new car dealers is 0.76, the same as the overall proportion of complaints settled in 2016. Use the z-table.
a. Suppose you select a sample of 200 complaints involving new car dealers. Show the sampling distribution of p.
E(F) =
(to 2 decimals)
(to 4 decimals)
b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.07 of the population proportion (to
4 decimals)?
probability =
c. Suppose you select a sample of 490 complaints involving new car dealers. Show the sampling distribution of p.
E(F) =
(to 2 decimals)
(to 4 decimals)
d. Based upon the larger sample of 490 complaints, what is the probability that the sample proportion will be within 0.07 of the population
proportion (to 4 decimals)?
probability =
e. As measured by the increase in probability, how much do you gain in precision by taking the larger sample in part (d)?
The probability of the sample proportion being within 0.07 of the population mean is increased by
3 decimals). There is a gain in
precision by
Select your answer - v the sample size.
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
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