ASK TOUR TEACHERBetween April 13-14th, 2016, Rasmussen polling organization asked 1,000 American adults Currently, who pays a larger share of their income in taxes wealthy Americans or middle-class Americans? 71% respondedthat middle class American pay a larger share of theidincome in taxes than wealthy Americans.All American adults is theO statisticO parameterO populationO sample71% is theO parameterO sampleO populationO statistic1000 American adults is theO populationO statisticO parameterO sampleThe true percentage of American adults who believe that middle class Americans pay a larger share of their income in taxes than wealthy Americans isO sampleO parameterO statisticO population TEACHERFrom July 5-7, 2017, the Gallup Organization asked a random sample of 1,021 adults aged 18 and older living in the United States and Washington D.C.In general, how harmful do you feel secondhand smoke is toadults7and found that 59% believe that secondhand smoke is very harmful.Fill in each of the following termsstatistic, population, parameter, sampleexactly once to describe the following aspects of the above statistical research.The percentage of alladults aged 18 and older living ia the United States and Washington D.C. who believe that secondhand smoke is somewhat harmful is theO statisticO parameterO sampleO population59% is theO populationO statisticO sampleO parameter1,021 adults aged 18 and older living in the United States and Washington D.C. is theO populationO parameterO statisticO sampleAll adults aged 18 and older living in the United States and Washington D.C. is theO sampleO statisticO populationO parameter

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Answered: ASK TOUR TEACHER Between April 13-14th,…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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A study shows that 28% of the population has high blood pressure. The study also shows that 86% of those who do not have high blood pressure exercise at least 90 minutes per week, while 32% of those with high blood pressure exercise at least 90 minutes per week. Which of the following relative frequency tables could the study provide? Has high blood pressure Does not have high blood pressure Total Has high blood pressure Does not have high blood pressure Total Exercise > 90 minutes per week 24% 23% 47% Exercise > 90 minutes per week 9% 62% 71% Exercise < 90 minutes Total per week 4% 49% 53% 19% 10% 28% Exercise < 90 minutes Total per week 29% 72% 100% 28% 72% 100%
A consumer magazine wants to compare lifetimes of ballpoint pens of three different types. The magazine takes a random sample of pens of each time and records the lifetimes (in minutes) in the table below. Do the data indicate that there is a difference in the mean lifetime for the three brands of ballpoint pens? Brand 1 Brand 2 Brand 3 260 181 238 218 240 257 184 162 241 219 218 213
A random sample of 25 Berkeley College students was asked, “How many hours per week typically do you work outside the home?” Their responses were as follows: {0, 0, 15, 20, 30, 40, 30, 20, 35, 35, 28, 15, 20, 25, 25, 30, 5, 10, 30, 24, 28, 30, 35, 15, 15} a. Find the mean, the median and the mode of hours worked outside the home for the sample data. Show all your work to justify your answer. b. Use the above data to complete the following table summarizing the number of hours worked outside the home. Express the relative frequency as a percent. Class Tally Frequency Relative Frequency 0-10 11-20 21-30 31-40 Total c. Find the five-number summary of the hours worked outside of the home by the 25 Berkeley College students.
A research poll included 1762 randomly selected adults who were asked whether "global warming is a problem that requires immediate government action." Results showed that 975 of those surveyed indicated that immediate government action is required. A news reporter wants to determine whether these survey results constitute strong evidence that the majority (more than 50%) of people believe that immediate government action is required. Complete parts (a) through (c) below. a. What is the best estimate of the proportion of adults who believe that immediate government action is required? The best estimate is ☐ (Round to three decimal places as needed.)
Descriptive Statistic provides information only about the collected data and in no way draws inferences or conclusion concerning a larger set of data. Select one: O True O False
International experience around the world is important in our culture of globalization. According to NAFSA, 54.5% of all American students traveling abroad went to Europe in the 2014-2015 academic year. To determine if there is shift in the proportion of students traveling to Europe, suppose a random sample of 300 students who had studied abroad was taken for the 2015-2016 school year. One-hundred sixty of the students traveled to Europe. a. Conduct a test to determine if the proportion of students traveling to Europe has changed. Be sure to provide a complete write-up. b. Based on the hypothesis test, would you expect 0.545 to be in confidence interval for the proportion? Explain without constructing the interval.
The sample mean is the point estimator of а. O b. o О с. р С. O d. H
Does the type of instruction in a college statistics class (either lecture or self-paced) influence students’ performance, as measured by the number of quizzes successfully completed during the semester? Twelve students were recruited for the study. Students received the lecture instruction or a self-paced instruction. The total number of quizzes completed during teach type of instruction appear below.
Used car auctions give car dealers an opportunity to increase their used car inventory by purchasing cars used as rental cars, assigned to company executives, and other similar activities. Suppose population 1 is all black cars sold at used car auctions, and population 2 is all white cars sold at used car auctions. Of interest is to estimate the difference in the mean sale price of all black cars sold at used car auctions and the mean sale price of all white cars sold at used car auctions. Based on this, using both the appropriate symbol and in words, state the one parameter of interest.
Three different traffic routes are tested for mean driving time. The entries in the given table are the driving times in minutes on the three different routes. State the following: SSbetween :_________ SSwithin :__________ MSbetween , :________ MSwithin :__________ F statistic. :________
The National Study of the Changing Work Force conducted a study of 2958 wage and salaried workers on issuesranging from relationships with their bosses to household chores. The data were gathered through hour-longtelephone interview with a nationally representive sample. In response to the questions “What does your job meanto you?” 1538 people responded that they “Receive personal satisfaction from success at work.” Let p be thepopulation proportion of people who receive personal satisfaction from success at work. (a) Find a 95% CI for the true value of p. (b) How large of sample is needed if we wish to be 99% confident that the sample proportion of p is within1% of the true population proportion.
The Wall Street Journal Corporate Perceptions Study 2011 surveyed readers and asked how each rated the quality of management and the reputation of the company for over 250 worldwide corporations. Both the quality of management and the reputation of the company were rated on an excellent, good, and fair categorical scale. Assume the sample data for 200 respondents below applies to this study. Quality of Management Reputation of Company Excellent Good Fair Excellent 40 25 5 Good 35 28 10 Fair 25 17 15 (a) Use a 0.05 level of significance and test for independence of the quality of management and the reputation of the company. State the null and alternative hypotheses. H0: Quality of management is not independent of the reputation of the company.Ha: Quality of management is independent of the reputation of the company. H0: Quality of management is independent of the reputation of the company.Ha: Quality of management is not independent of the…

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