Happy customers As the Hispanic populationin the United States has grown, businesses havetried to understand what Hispanics like. One studyinterviewed a random sample of customers leaving abank. Customers were classified as Hispanic if theypreferred to be interviewed in Spanish or as Angloif they preferred English. Each customer rated theimportance of several aspects of bank service on a10-point scale.³¹ Here are summary results for theimportance of "reliability" (the accuracy of accountrecords and so on):GroupAngloHispanicn9286X6.375.91Sx0.600.93The distribution of reliability ratings in each groupis not Normal. The use of two-sample t procedures isstill justified. Why?Construct and interpret a 95% confidence intervalfor the difference between the mean ratings of theimportance of reliability for Anglo and Hispanicbank customers.Interpret the 95% confidence level in the context ofthis study.

n1=92 n2=86 X1bar=6.37 X2bar=5.91 s1=0.6 s2=0.93

Answered: Happy customers As the Hispanic…

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

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).
To investigate whether one-pound bags of potato chips actually contain a full pound of chips, a skeptical statistics student goes to the supermarket and weighs every bag on the shelf. To analyze these data, what statistical test should i use?
As the Hispanic population in the United States has grown,businesses have tried to understand what Hispanics like. One study interviewed a random sample of customers leaving a bank. Customers were classified as Hispanic if they preferred to be interviewed in Spanish or as Anglo if they preferred English. Each customer rated the importance of several aspects of bank service on a 10-point scale.31 Here are summary results for the importance of “reliability” (the accuracy of account records and so on): Construct and interpret a 95% confidence interval for the difference between the mean ratings of the importance of reliability for Anglo and Hispanic bank customers.
The Student Union President conducted a survey to estimate the proportion of first year students who participated in the social activities organized by the Student Union. Which of the following surveying options does NOT affect the presidents ability to generalize the survey to all first year students. The president put the survey on the Student Union webpage a Monday and collected the responses at the end of the week. All of the other options present a problem for generalizing the results. The president polled all students coming out of the Student Union on a given Monday. The freshmen class consists of 3000 students. A random sample of only 300 were sent a survey. Only 150 responded. The survey was sent only to first year students enrolled in statistics courses because all students need to satisfy a statistics general education requirement.
When a sample contains 100 or more cases, what is the correct probability distribution to use?
A new statistics book has been written and a faculty member and a student are asked to rank the new book and the other five best statistics books. How much do the student and professor agree on their assessment of the books (1 being the favorite, 6 being the least)? Use the data below to answer the following question:
In a recent survey, a group of people were asked if they were happy or unhappy with the state of the country. The data are shown in the contingency table below, organized by political party. What is the relative risk of being unhappy with the state of the country for Democrats? Round your answer to two decimal places. Нарру | Unhappy | Total Republican 152 98 250 Democrat 104 146 250 Total 256 244 500 Provide your answer below:
You are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats.You sample 180 men, and 85% own cats.You sample 100 women, and 45% own cats.Find the test statistic, rounded to two decimal places.
If the test result is significant at 5% level, it must also be significant at 1% level. O True O False
The PRC wants to assess the difference in ratings of five different engineering board examinations. They selected the top 5 on each group. The data are provided below. Use a = 0.01 to determine if there are any differences between the ratings of the five examinations. AE СЕ ЕСЕ EE ME 93 95 90 91 94 90 92 86 91 91 90 90 84 90 88 88 89 84 89 88 85 87 84 88 87 What is the value of SS Within?
An industrial-organizational psychologist is interested in discovering the relationship between the tempo of preferred music that is played in a workplace and employee mood. Employees chose their favorite song on an MP3 player and then reported their moods when listening to that piece of music. A total of 10 participants were asked individually and brought in their own MP3 players; the least number of songs on an employee's MP3 player was 350. The sample data are presented as a scatterplot below. The psychologist wants to use a Pearson correlation coefficient to analyze the relationship. Considering the assumptions for this statistic, which of these statements is the correct course of action? A. The researcher has chosen the wrong statistic to represent this relationship. B. The researcher has violated a robust assumption and should be able to calculate r. C. The researcher has chosen the right statistic because all the assumptions are valid. D. The researcher has violated a…

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