Homework Help is Here – Start Your Trial Now!
Math
Statistics
In 2016 the Better Business Bureau settled 75% 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 0.75, 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(p) = 0.75 (to 2 decimals) 07 0.0306 (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.6729 c. Suppose you select a sample of 400 complaints involving new car dealers. Show the sampling distribution of p. E(P) = 0.75 (to 2 decimals) % = 0.0217 (to 4 decimals) d. Based upon the larger sample of 400 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.81 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 0.03 of the population mean is increased by 0.95 in precision by increasing the sample size. (to 3 decimals). There is a gain Go to Settings to activate

In 2016 the Better Business Bureau settled 75% 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 0.75, 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(p) = 0.75 (to 2 decimals) 07 0.0306 (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.6729 c. Suppose you select a sample of 400 complaints involving new car dealers. Show the sampling distribution of p. E(P) = 0.75 (to 2 decimals) % = 0.0217 (to 4 decimals) d. Based upon the larger sample of 400 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.81 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 0.03 of the population mean is increased by 0.95 in precision by increasing the sample size. (to 3 decimals). There is a gain Go to Settings to activate

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
See similar textbooks
icon
Related questions
Question

Question is attached to the screenshot

need help with only parts D and E

thanks!

In 2016 the Better Business Bureau settled 75% 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 0.75, 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(p) = 0.75 (to 2 decimals) % = 0.0306 (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.6729 c. Suppose you select a sample of 400 complaints involving new car dealers. Show the sampling distribution of p. E(p) 0.75 (to 2 decimals) % = 0.0217 (to 4 decimals) d. Based upon the larger sample of 400 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.81 e. As measured by the increase in probability, how much do you gain in precision by taking the larger sample in part (d)? 0.95 The probability of the sample proportion being within 0.03 of the population mean is increased by in precision by increasing the sample size. (to 3 decimals). There is a gain Go to Settings to activate
Transcribed Image Text:In 2016 the Better Business Bureau settled 75% 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 0.75, 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(p) = 0.75 (to 2 decimals) % = 0.0306 (to 4 decimals) b. Based upon a sample of 200 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.6729 c. Suppose you select a sample of 400 complaints involving new car dealers. Show the sampling distribution of p. E(p) 0.75 (to 2 decimals) % = 0.0217 (to 4 decimals) d. Based upon the larger sample of 400 complaints, what is the probability that the sample proportion will be within 0.03 of the population proportion (to 4 decimals)? probability = 0.81 e. As measured by the increase in probability, how much do you gain in precision by taking the larger sample in part (d)? 0.95 The probability of the sample proportion being within 0.03 of the population mean is increased by in precision by increasing the sample size. (to 3 decimals). There is a gain Go to Settings to activate
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 4 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Glencoe Algebra 1, Student Edition, 9780079039897…
Glencoe Algebra 1, Student Edition, 9780079039897…
Algebra
ISBN:
9780079039897
Author:
Carter
Publisher:
McGraw Hill
Holt Mcdougal Larson Pre-algebra: Student Edition…
Holt Mcdougal Larson Pre-algebra: Student Edition…
Algebra
ISBN:
9780547587776
Author:
HOLT MCDOUGAL
Publisher:
HOLT MCDOUGAL
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Big Ideas Math A Bridge To Success Algebra 1: Stu…
Algebra
ISBN:
9781680331141
Author:
HOUGHTON MIFFLIN HARCOURT
Publisher:
Houghton Mifflin Harcourt
SEE MORE TEXTBOOKS