To devise effective marketing strategies it is helpful to know the characteristics of your customers. A study compared the demographic characteristics of people who use the Internet for travel arrangements. Of 932 Internet users, 543 had completed college. (a) Find a 95% confidence interval for the proportion of people who use the Internet for travel arrangements, and have a college degree. (b) Can you conclude from this study that the majority of people who use the Internet for travel arrangements own a college degree? Justify your answer using the confidence interval computed in (a).

To devise effective marketing strategies it is helpful to know the characteristics of your customers. A study compared the demographic characteristics of people who use the Internet for travel arrangements. Of 932 Internet users, 543 had completed college. (a) Find a 95% confidence interval for the proportion of people who use the Internet for travel arrangements, and have a college degree. (b) Can you conclude from this study that the majority of people who use the Internet for travel arrangements own a college degree? Justify your answer using the confidence interval computed in (a).

Name: To devise effective marketing strategies it is helpful to know the ch
Uploaded: 2022-12-08T14:54:05.000Z
Channel: Bartleby
Description: To devise effective marketing strategies it is helpful to know the characteristics of yourcustomers. A study compared the demographic characteristics of people who use theInternet for travel arrangements. Of 932 Internet users, 543 had completed col

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

See similar textbooks

Similar questions

The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. Open an excel worksheet. Copy data and paste to excel. Use the Data Analysis Toolpak to perform a two sample t procedure. College Grads 501 503 518 517 650 526 538 394 550 531 556 594 497 432 608 485 High School Grads 442 492 580 478 479 425 486 485 528 390 524 535
Empathy among police officers influences how they interact with citizens and the likelihood that they receive complaints. Gender differences in levels of empathy in the general population are not large but male and female officers have been shown to have different interaction styles with the public; this may be due to the different empathy levels. After sampling officers and measuring their levels of empathy you find the following data. Males Females n = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 If you were going to make gender comparisons like this, which option would be the correct choice? Write A or B in the box. Option A. Independent-measures t test Option B. Repeated-measures t test Based on these results, is there a significant difference between the attitudes for males and for females? Use a two-tailed test with = .05. (Use 3 decimal places.) t-critical = ± t = What is your conclusion? Write A, B, C, or D in the box. Option A. Reject the…
In the NFL, Coaches can throw "challenge" flags if they believe officials have made an incorrect call on the field. Then, based upon further analysis, the call is either overturned (because the referees were incorrect) or upheld (referees were correct). In the first eight weeks of last NFL season, there were 316 challenges made, with 154 of those calls overturned. The NFL team owners used this data to begin a lawsuit that claimed referees were wrong more than 50% of the time in challenged situations. They want to perform statistical analysis before filing that lawsuit. For the following question, select the answer which correctly responds. Using the analysis presented in previous questions about this claim, is the NFL owners' complaint merited? That is, should they proceed in filing the lawsuit? O Yes O No
A researcher wants to compare the effectiveness of three different teaching methods (A, B, and C) on exam scores. The researcher gathers exam scores from 20 students for each teaching method, and wants to determine if there is a significant difference in the mean exam scores between the three teaching methods. What test can the researcher use to answer this question?
Of the 328 patients that completed the survey last year, 211 of them claimed to be returning patients which is 64.3% of the sample. Is this an example of a retrospective, cross-sectional, or prospective observational study? Justify your answer.
The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads High School Grads 485 471 442 492 534 517 580 478 650 526 479 425 554 426 486 485 534 531 528 390 572 594 524 535 497 464 608 453 (a) Formulate the hypotheses that can be used to determine whether the sample data support the hypothesis that students show a higher population mean math score on the SAT if their parents attained a…
Would you expect the correlation between High School GPA and College GPA to be higher when taken from your entire high school class or when taken from only the top 20 students? Why?
Which one measure of central tendency should you report for the variable SOCIAL CLASS (1=lower, 2=working, 3=middle, and 4=upper)
Recherchers conducted two surveys about teens are their use of social media. The First survey asked a Random sample of 800 U.S. teens about their use of Instagram. A second survey asked the same question to a Random sample of 2253 Canadian teens. In these two studies. 73% of U.S. teens and 88% of Canadian teens said that they use instagram. Use these results to answee the following questions about the proportion of U.S. and Canadian teens that use instagram. (Round to the nearest whole hundredth as needed).
Empathy among police officers influences how they interact with citizens and the likelihood that they receive complaints. Gender differences in levels of empathy in the general population are not large but male and female officers have been shown to have different interaction styles with the public; this may be due to the different empathy levels. After sampling officers and measuring their levels of empathy you find the following data. Males Females n = 6 n = 9 M = 31 M = 45 SS = 490 SS = 680 If you were going to make gender comparisons like this, which option would be the correct choice? Write A or B in the box. [a] Option A. Independent-measures t-test Option B. Repeated-measures t-test
True or False The PEW Researcher center based on a sample of 10,000 recent college graduates says the average amount of money owed in student loans is $31,800. The value of $31,800 is a statistic. A study is observational when the researcher controls the behaviors of their subjects.
The College Board provided comparisons of Scholastic Aptitude Test (SAT) scores based on the highest level of education attained by the test taker's parents. A research hypothesis was that students whose parents had attained a higher level of education would on average score higher on the SAT. The overall mean SAT math score was 514. SAT math scores for independent samples of students follow. The first sample shows the SAT math test scores for students whose parents are college graduates with a bachelor's degree. The second sample shows the SAT math test scores for students whose parents are high school graduates but do not have a college degree. College Grads 485 487 518 517 650 542 570 426 566 499 588 562 497 448 592 453 High School Grads 442 492 580 478 479 425 486 485 528 390 524 535 a. formulate the hypotheses b. find the test statistic c. find p- vaule for the hypothesis test d. at a=0.05, what is the conclusion