9. There are about 8 million people in the City of New York. A survey organization took a simplerandom sample of 2,500 persons and found that the average household income in the sample was$59,210 and the SD was $26,120.The organization estimates the average income in the entire city to be around $59,210, they puts give-or-take number of $522.40 on this estimate. Say whether each of the following statementsis true or false, and explain.(a) An approximate 99.7%-confidence interval for the average household income in the city runsfrom $57.642.80 to $60,777.20(b) If a statistician takes a simple random sample of 2,500 persons out of the 8 million peoplein the city, and goes 3 SEs either way from the average household income of the the 2,500people in the sample, there is about a 99.7% chance that his interval will cover the averagehousehold income in the city.(c) About 99.7% of the people in the sample had incomes in the range $59, 210+ $78,360.(d) It is estimated that 99.7% of the 8 million people in New York City had incomes between$59,210.00-$1567.20 $57,542.80 and $59,210+ $1567.20 $60,777.20.(e) The normal curve can't be used to figure confidence levels here because the data don't followthe normal curve.

Hello thank you for the question. According to our honor code can answer only three sub parts at a…

Answered: There are about 8 million people in the…

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

When answering questions on a survey, Melanie prefers to answer questions that allow her to write her own responses, so she is free to answer in any way that she'd like, rather than just pick a number. What kind of questions does Melanie prefer? A. Open-ended questions B. Good-quality questions C. Closed-ended questions D. Bad-quality questions
A random sample of 50,000 college freshmen in the United States was asked if they prefer taking online courses. a. Describe the population from which the sample was drawn. Use a complete sentence. b. Describe the inference that would be made in this study. Use a complete sentence. 283/5000
According to a newspaper, 58% of high school seniors have a driver's license. Suppose we take a random sample of 200 high school seniors and find the proportion who have adriver's license. a. What value should we expect for our sample proportion? b. What is the standard error? c. Use your answers to parts (a) and (b) to complete this sentence: We expect ____% to have their driver's license, give or take _____%. d. Suppose we increased the sample size from 200 to 800. What effect would this have on the standard error? Recalculate the standard error to see if your prediction was correct.
Students at Dover Community College have a mean credit card debt of $4,700 with a median of $2,900. Students at Ralton Community College have a mean credit card debt of $2,100 with a median of $1,900. Which of the following statements are true based on this information? There may be more than one correct answer. i. No more than half of Ralton students have debt more than $1,900. ii. The total debt of Ralton students is more than the total debt of Dover students. iii. The largest debt of the Ralton students is less than the largest debt of the Dover students. iv. About one-fourth of Ralton students have debt more than $2,100. v. Less than half of Dover students have debt more than $4,700.
Use the following results from a test for marijuana use, which is provided by a certain drug testing company. Among 141 subjects with positive test results, there are 30 false positive results. Among 155 negative results, there are 3 false negative results. Complete parts (a) through (c). (Hint: Construct a table.) a. How many subjects were included in the study? The total number of subjects in the study was b. How many subjects did not use marijuana? A total of subjects did not use marijuana. c. What is the probability that a randomly selected subject did not use marijuana? The probability that a randomly selected subject did not use marijuana is (Do not round until the final answer. Then round to three decimal places as needed.)
Researchers wanted to determine if there was an association between daily cantaloupe consumption and the occurrence of colon cancer. The researchers looked at 93,417 women and asked them to report their cantaloupe-eating habits. The researchers also determined which of the women had adenocarcinoma. After their analysis, the researchers concluded that consumption of two or more servings of cantaloupe per day was associated with a reduction in adenocarcinoma Complete parts (a) through (c) below. (a) What type of observational study was this? Explain. O A. This was a cohort study because it identified a group of individuals to participate in the study and observed the group over a long period of time. O B. This was a cross-sectional study because all information about the individuals was collected at a specific point time O C. This was a case-control study because individuals that had a certain characteristic were matched with those that did not. (b) What is the response variable in the…
In a survey of 3428 adults aged 57 through 85 years, it was found that 87.6% of them used at least one prescription medication. Complete parts (a) through (c) below. ..... a. How many of the 3428 subjects used at least one prescription medication? (Round to the nearest integer as needed.)
If 61% of Americans believe most school textbooks favor political correctness over accuracy, how many Americans in a group of 50 would you expect to believe this?
. A national polling organization wishes to estimate the percentage of all teenagers who believes Social Security would be there for them. The organization surveys a random sample of 1500 teenagers and 37% of this sample says that they believe Social Security would be there for them in this survey what is the population of interest. A. The 1500 teenagers who were surveyed. B. Teenagers who believe social security will be there for them C. All teenagers. D. The people in the sample who believe social security will be there for them.
Do you need inferential statistics to answer each of the following questions? (Answer “yes” or “no” for each question) a. How many wheels are on a bicycle? b. How many bicycles are parked outside of the Starbucks at the corner of Boyd and Asp? c. What proportion of Belgium residents own bicycles? d. Do Oklahoma students outperform the national average on the college entrance exam? e. Did you outperform the national average on the college entrance exam? f. Is it hotter today in Tulsa than Topeka? g. Is the average temperature in Tulsa greater than that of Topeka
Dr. A. Ventura is interested in determining what kinds and how many pets people own in Bakersfield. He stands outside Petco and asks people what kind of pet they own. This is the result of his survey: dog=1; cat=2; bird=3; reptile=4; fish=5; other=6 1,1,2,2,2,1,1,3,2,3,1,1,1,2,2,4,4,2,2,1,1,1,5,4,3,4,1,1,1,2,2,6,1,1,2,2,1,2,1,2,6,3,4,5
In your own words, describe a situation that would require researchers to use a one-sample tt-test. Indicate the variable of interest, how the sample should be collected, the question of interest, and any other important details.

SEE MORE QUESTIONS

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