E< 150 of 645 >14. Confidence in banks: A poll conducted by the General Social Survey asked a randomsample of 1325 adults in the United States how much confidence they had in banks andother financial institutions. A total of 149 adults said that they had a great deal ofconfidence. An economist claims that less than 15% of U.S. adults have a great deal ofconfidence in banks.Page 40a. State the appropriate null and alternate hypotheses.b. Compute the test statistic z.c. Using a ≈ 0.05, can you conclude that the executive's claim is true?=d. Using a = 0.01, can you conclude that the executive's claim is true?

From the provided information, Sample size (n) = 1325 From which 149 adults said that they had a…

Answered: Confidence in banks: A poll conducted…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

The Vegetarian Resource Group commissioned Harris Poll in 2016 to conduct a nationally representative online poll of 2,015 adults aged 18 and over. They found that 3.3% of the respondents identified as vegetarian. a. Construct and interpret a 95% confidence interval for the proportion of vegetarians. b. Based on the interval what kind of evidence do you expect to have for the alternative two-sided hypothesis test? explain. I do not understand question b
A newspaper reported that 80% of people say that some coffee shops are overpriced. The source of this information was a telephone survey of 100 adults. a. Identify the population of interest in this study. b. Identify the sample for the study. c. Identify the parameter of interest in the study. d. Find and interpret a 90% confidence interval for the parameter of interest. a. Identify the population of interest. Choose the correct answer below. coffee shops a telephone survey 80% of adults newspapers 100 adults adults b. Identify the sample. Choose the correct answer below. adults a telephone survey 100 adults 80% of adults newspapers coffee shops c. Identify the parameter of interest. Choose the correct answer below. A. p, the population proportion of adults who say that some coffee shops are overpriced B. o, the population variance of adults who say that some coffee shops are overpriced С. p, the sample proportion of adults who say that some coffee shops are overpriced D. X, the…
3. A large automobile manufacturing plant produces 1200 new cars every day. A quality-control inspector checks a random sample of 90 cars from one day's production and finds that 12 of them have minor paint flaws. a. Find the margin of error for a 99% confidence interval. b. Construct and interpret a 99% confidence interval by completing the statement below. We are [ % confident that the true population proportion for the cars with minor paint flaws are between and c. Find the margin of error for a 90% confidence interval. d. Construct and interpret a 90% confidence interval by completing the statement below. We are % confident that the true population proportion for the cars with minor paint flaws are between and e. A 99% confidence interval is than a 90% confidence interval
Construct a 95% confidence interval for p1 - p2 for a survey that finds 30% of 240 males and 41% of 200 females are opposed to the death penalty. Group of answer choices a.(-0.200, -0.021) b.(-1.532, 1.342) c.(-1.324, 1.512) d.(-0.561, 0.651)
Suppose that in a recent poll, 550 of the 915 randomly selected U.S. adults agreed with the statement “social media sites like Facebook and Twitter do more to divide the country” (as opposed to unite the country, or neither). a. Use this information to construct a 90% confidence interval.
C. What is the margin of error for the 95% confidence interval?
An issue of Time Style and Design reported on a poll conducted by Schulman Ronca &Bucuvalas Public Affairs about the shopping habits of wealthy Americans.A total of 603 interviews were conducted among a national sample of adults with householdincomes of at least $150,000. Of the adults interviewed, 410 said they had purchased clothing,accessories, or books online in the past year.a. Find a 95% confidence interval for the proportion of all U.S. adults with householdincomes of at least $150,000 who purchased clothing, accessories, or books online inthe past year.b. Interpret the confidence interval.
According to some car loan statistics, 44% of Americans are relying on an auto loan to pay for their cars. Assuming this finding to be based on a simple random sample of 1500 Americans, construct and interpret the 95% confidence interval for the population proportion of Americans who have a car loan.
A political scientist claims that 38% of first-year college students characterize themselves as being “moderate” or “middle of the road” as far as their political affiliation is concerned. Believing this claimed value is too high, you survey a random sample of 400 first-year college students and find that 120 characterize themselves as being “moderate” or “middle of the road.” Based on this information, what will the test statistic be? Choose the answer below that is closest to what you calculate, and try not to do a lot of rounding until you get to the very end of your calculations. 1. -0.3 2. -1.2 3. -2.6 4. -3.3 5. None of the other answer options are correct because the test statistic should be positive, not negative.
1.A poll questioned 800 students about their views on pizza for lunch at school. The results indicated that 65% of respondents felt that pizza was a must for lunch at school and would quit school if there was no pizza at lunch. a) Determine the 90% confidence interval. b) What is the margin of error for this response at the 90% confidence level?
A poll asked adults in a certain country whether immigration was a good thing or a bad thing for the country. Out of 1093 respondents, 448 said it was a good thing. a. What percentage of those taking the poll said immigration was a good thing? b. Check the conditions to determine whether you can apply the CLT to find a confidence interval. c. Find a 95% confidence interval for the proportion who believe immigration is a good thing. a % of those taking the poll said immigration was a good thing (Round to one decimal place as needed.)

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

SEE MORE TEXTBOOKS