Question HeipPeople were surveyed worldwide, being asked the question "How important is acquiring wealth to you?" Of 1516 respondents in country A, 1164 said that it was of more than average importance. In country B, of 1325 respondents, 610 said it was of more thanaverage importance.a) What proportion thought acquiring wealth was of more than average importanceb) Create a 99% confidence interval for the percentage of people who thought it was of more than average importance in country A. (Be sure to test conditions.) Compare that to a confidence interval for the country B population.each country's sample?a) The sample proportions are 0.768 for country A and 0.460 for country B.(Round to three decimal places as needed.)b) What is the confidence interval for country A? Select the correct choice below and, if necessary, fill in the answer boxes within your choice.O A. The 99% confidence interval for country A is ((76.8 %, 46.0 %)(Round to one decimal place as needed.)O B. The conditions for constructing a confidence interval are not satisfied.Click to select and enter your answer(s) and then click Check Answer.Final CheckClear AllpartremainingW14F9FI0FBF7*&%8.%24

Name: Question HeipPeople were surveyed worldwide, being asked the question
Uploaded: 2024-03-20T07:07:00.000Z
Channel: Bartleby
Description: Question HeipPeople were surveyed worldwide, being asked the question "How important is acquiring wealth to you?" Of 1516 respondents in country A, 1164 said that it was of more than average importance. In country B, of 1325 respondents, 610 said it

The sample proportion is calculated using the formula:

Math

Statistics

People were surveyed worldwide, being asked the question "How important is acquiring wealth to you? Of 1516 respondents in country A, 1164 said that it was of more than average importance. In country B, of 1325 respondents, 610 said it was of more than average importance. a) What proportion thought acquiring wealth was of more than average importance in each country's sample? b) Create a 99% confidence interval for the percentage of people who thought it was of more than average importance in country A. (Be sure to test conditions.) Compare that to a confidence interval for the country B population. a) The sample proportions are 0.768 for country A and 0.460 for country B. (Round to three decimal places as needed.) b) What is the confidence interval for country A? Select the correct choice below and, if necessary, fill in the answer boxes within your choice. O A. The 99% confidence interval for country A is (I76.8%,46.0%) (Round to one decimal place as needed.) O B. The conditions for constructing a confidence interval are not satisfied.

People were surveyed worldwide, being asked the question "How important is acquiring wealth to you? Of 1516 respondents in country A, 1164 said that it was of more than average importance. In country B, of 1325 respondents, 610 said it was of more than average importance. a) What proportion thought acquiring wealth was of more than average importance in each country's sample? b) Create a 99% confidence interval for the percentage of people who thought it was of more than average importance in country A. (Be sure to test conditions.) Compare that to a confidence interval for the country B population. a) The sample proportions are 0.768 for country A and 0.460 for country B. (Round to three decimal places as needed.) b) What is the confidence interval for country A? Select the correct choice below and, if necessary, fill in the answer boxes within your choice. O A. The 99% confidence interval for country A is (I76.8%,46.0%) (Round to one decimal place as needed.) O B. The conditions for constructing a confidence interval are not satisfied.

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

Related questions

Q: 2. Given: n=80, a = 15, level of confidence is 92%. What is the margin of error of the given data?

Q: memoi meal. people were given memory ests bef their meal and then again after their meal. The data…

Q: I am asking for help on the second set of three bullet points starting with "Find the test…

A: The question is about categorical data analysis Given : To find : 1 ) Test stat 2 ) p value 3 )…

Q: What set of factors would produce the narrowest confidence interval for estimating a poulation mean?…

A: Objective of this question is that, which option is the correct choice.

Q: joint USA Today/CNN/Gallup Poll in July 2020 indicated that of 832 white adults, 46% thought…

A: Given n=832 P=0.46

Q: Construct a 99.8% confidence interval for the proportion of women who work at home who are college…

A: Given,n=519x=165p^=xnp^=165519=0.318The point estimation for the proportion is 0.318 .

Q: What is the purpose of finding a confidence interval for a proportion?

A: A true (or population) proportion (denoted as p), by definition, is essentially determined as the…

Q: Discuss the differences between confidence and probability when referring to a confidence interval.…

A: Statisticians use confidence intervals to measure uncertainty in a sample variable. confidence level…

Q: Public Policy Polling recently conducted a survey asking adults across the U.S. about music…

A: Given data N = 571 X = 80 99% confidence interval

Q: .If you are at the 90th percentile in terms of GPA, then 90% of the sample has a lower GPA than you.…

A: Percentile : Percentile is the number such that certain percentage of data fall below that number.…

Q: Practice. Testing a vaccine for HIV. Of 8198 subjects given a placebo, 74 became infected with HIV,…

A: (a)Given that,sample one, x1 =74, n1 =8198, p1= x1/n1=0.009sample two, x2 =51, n2 =8197, p2=…

Q: 1. A survey of 224 children of ages 9 to 17 was conducted shortly after 1986 space-shuttle disaster.…

Q: 1. Your colleague collected a sample of data regarding the mean length of a movie and they computed…

A: It has been given that the confidence interval of the mean length of a movie has been computed on a…

Q: 1. In a recent poll 62 out of 149 randomly chosen students at Allen High School say they plan to buy…

Q: Please answer all. Thank you. A 95 percent confidence interval for the mean can be interpreted mean…

A: We have give that the statement 95% confidence interval for the mean can be interpreted

Q: A national poll found that 684 people out of 1100 believe in UFO’s. Answer the following questions.…

A: Given data,Number of people n=1100People who believe in UFO is x=684Find the 94% confidence interval

Q: 7. Same question different problems

Q: A researcher would like to determine if the proportion of households without health insurance…

A: Given information: Household income Yes No Less than $25,000 59 22 $25,000 to $49,999 142 40…

Q: 1.Community college students conduct a survey at their college. They ask "Do you plan to transfer to…

A: We have given that, Favorable cases (X) = 80 and sample size (N) = 100 Then, We will find the 94%…

Q: 71 S4 4 Aphilantvopic organization knows that s donors have an average age near 60 and is…

Q: Suppose that in the exit poll from the state of Florida during the year 2000 presidential elections…

A: Given: x=407, n=765p=xn=407765=0.532 The null and alternative hypothesis is, H0:P=0.5Ha:P>0.5 The…

Q: What test should be used in the following study? (options are uploaded in images). Levels of…

A: Given information: The investigator is specially interested to test whether there is any difference…

Q: 9. A supermarket is planning to market a new ice cream. However, before marketing this ice cream,…

A: No. of people who tasted ice cream (n)=400 No. of people who liked the ice cream (x)=244

Q: According to a report published by the Pew Research Center in February 2010, 61% of Millennials…

A: Given : Proportion of Millennials (people born between 1981 and 1996) think that their generation…

Q: An insurance company selected a sample of 100 auto claims filed with it and investigated those…

Q: In general, when you increase the confidence level for a confidence interval using the same sample…

A: As confidence level increases critical value is going to increase . Here they given sample…

Q: Ten students on a low-fat diet designed to lower their cholesterol and recorded their before and…

A: Let X represents the cholesterol level before diet and Y represents the cholesterol level after…

Q: Examining a random sample of records from my past Statistics classes, I found the 47 of the 282…

Q: What is the confidence interval? Select the correct choice below and, if necessary, fill in the…

A: Mean = 56.64 Standard deviation = 14.598 n=100

Q: 8. A marketing research company surveyed grocery shoppers in the east and west coasts to see the…

A: (a) Obtain the 95% confidence interval for the difference between the proportion of customers who…

Q: 1. Online News In a Harris poll of 2036 adults, 40% said that they prefer to get their news online.…

A: Given that the sample size is n=2036 and sample proportion, p^=0.40. Confidence level=95%…

Q: The Nellie Mae organization conducts an extensive annual study of credit card usage by college…

Q: QUESTION #2. In a Harris poll, adults were asked if they are in favor of abolishing the penny. Among…

Q: Are job applicants with easy to pronounce last names just as likely to get called for an interview…

A: Given Information: Easy to pronounce last names: Sample size n1=530 Number of successes x1=413…

Q: Four scenarios of statistical studies are given below. Decide which study uses a population…

Q: womence level. Use E=1%. 2) In a survey of 700 random households in a particular city in NCR, adults…

Q: Do more than 50% of U.S. adults feel they get enough sleep? According to Gallup's December 2004…

A: Sample size =1003 Number of US adults surveyed said that get enough sleep =552 We have to find the…

Q: Example: You would like to construct a 90% confidence interval for the proportion of graduating…

A: Obtain the value of the point estimate. The value of the point estimate is obtained below: Thus,…

Q: According to a telephone survey of adults, 86% of homeowners said that owning a home was a good…

A: From the given information, According to a telephone survey of adults, 86% of homeowners said that…

Q: 12. A newspaper article stated that the US Supreme Court received 812 letters from around the…

A: Normality condition: As expected number of success and expected number of failures increasing then…

Q: On April 15th, 1912, the R.M.S. Titanic sank into the North Atlantic Ocean, resulting in the loss of…

A: Given, The proportion of survivors by each class here is computed as: p(crew) = 212 / 885 =…

Q: A company surveyed its employees to determine what the new daily meal allotment dollar amount should…

A: would give the supervisor a better idea of what the true mean is compared to simply taking the mean…

Concept explainers

2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

Topic Video

Question

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!

SEE SOLUTION Check out a sample Q&A here

Step 1

Step 2

Step 3

Step 4

Step 5

Step 6

Trending now

This is a popular solution!

Step by step

Solved in 6 steps with 9 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

$Hypothesis Tests and Confidence Intervals for Proportions$

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.

Similar questions

Mental health. The General Social Survey asked the question: “For how many days during the past30 days was your mental health, which includes stress, depression, and problems with emotions, not good?”Based on responses from 1,151 US residents, the survey reported a 95% confidence interval of 3.40 to 4.24days in 2010.(a) Interpret this interval in context of the data.(b) What does “95% confident” mean? Explain in the context of the application.(c) Suppose the researchers think a 99% confidence level would be more appropriate for this interval. Willthis new interval be smaller or wider than the 95% confidence interval?(d) If a new survey were to be done with 500 Americans, do you think the standard error of the estimatebe larger, smaller, or about the same.
9. A researcher wants to construct a 99% confidence interval for the proportion of Americans who think that the U.S. invading Iraq was an effective step in combating world terrorism. She has no initial idea of what that proportion is. How large should her sample size be if she wants the margin of error to be at most two percent? Show or explain your thinking.
24. Job Interviews In a Harris poll of 514 human resource professionals, 90% said that the appearance of a job applicant is most important for a good first impression. a. Among the 514 human resource professionals who were surveyed, how many of them said that the appearance of a job applicant is most important for a good first impression? b. Construct a 99% confidence interval estimate of the proportion of all human resource professionals believing that the appearance of a job applicant is most important for a good first impression. c. Repeat part (b) using a confidence level of 80%. d. Compare the confidence intervals from parts (b) and (c) and identify the interval that is wider. Why is it wider?
A college administrator is interested in determining the proportion of students who receive some sort of financial aid. Instead of examining the records for all students, the administrator randomly draws 120 students and finds that 48 of them are receiving financial aid. Use a 90% confidence interval to estimate the true proportion of students who receive financial aid.
The National Association of Colleges and Employers sponsors the Graduating Student and Alumni Survey.Part of the survey gauges student optimism in landing a job after graduation. According to one year’s surveyresults, published in American Demographics, among the 1218 respondents, 733 said that they expecteddifficulty finding a job. Construct a 90% confidence interval for the proportion of students who expecteddifficulty finding a job. Interpret your result.
2. According to the website Rotten Tomatoes, 94% of people who watched the Netflix show Stranger Things liked it. Since UR students tend to be scientifically minded, we hypothesize that less than 94% of UR students like the show. Out of 219 surveyed UR students, 198 indicated they like Stranger Things. Use the built in prop.test() function to: a. Construct a 90% confidence interval for the proportion of UR students who like Stranger Things. b. Test at the a=0.10 significance level whether the proportion of students who like Stranger Things is LESS THAN 0.94. What conclusion do you reach?
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.
A. Suppose we wish to make an estimate of the proportion of the population that has ever been arrested. We take a random sample of 500 people. In this sample, 10% of the respondents report having ever been arrested. Construct a 95% confidence interval for the proportion of people in the population who have been arrested. 2. Interpret, in words, the meaning of this interval.
In a study by Sallie Mae and Gallup, 323 of the 569respondents said that they paid for their education by taking out student loans. Find a 95% confidence interval for the proportion of students who paid for their education by taking out student loans.
QUESTION IS IN IMAGE