r/books/9780321989437/pageid/10886CHAPTER 2 Organizing Data2.166 America's Melting Pot. The U.S. Census Bureau publishesdata on the population of the United States by rack and Hispanic ori-gin in American Community Survey. From that document, we con-structed the following bar chart. Note that people who are Hispanicmay be of any race, and people in each race group may be either His-panic or not Hispanic.Race and Ethnicity in America(in millions)229.438.914.726.350.7White Black Asian Othera. Explain why a break is shown in the first bar.b. Why was the graph constructed with a broken bar?c. Is this graph potentially misleading? Explain your answer.Hispanic2.167 M2 Money Supply. The Federal Reserve System publishesweekly figures of M2 money supply in the document Money StockMeasures. M2 includes such things as cash in circulation, deposits inchecking accounts, nonbank traveler's checks, accounts such as sav-allowing barings deposits andblocis bAdrStaTo

Given Information: Consider the given bar graph:

Answered: 2.166 America's Melting Pot. The U.S.…

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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14. Federal Prison Populations The populationdistribution of federal prisons nationwide by serious offenses is the following: violent offenses, 12.6%; property offenses, 8.5%; drug offenses, 60.2%; public order offenses—weapons, 8.2%; immigration, 4.9%; other, 5.6%. A warden wants to see how his prison compares, so he surveys 500 prisoners and finds 64 are violent offenders, 40 are property offenders, 326 are drug offenders, 42 are public order offenders, 25 are immigration offenders, and 3 have other offenses. Can the warden conclude that the percentages are the same for his prison? Use a ? 0.05.
1. The following table is the result of a survey regarding age group and whether or not a person has visited a physician in the past year. The results are in the table below. VISITED PHYSICIAN AGE GROUP Yes No Total Young 22 93 115 Old 37 67 104 Total 59 160 219 a) What percentage of people were young? b) What percentage of old people did not visit a physician in the past year?
The number of sick days taken (per month) by 200 factory workers is summarized below. Number of Days 0-5 6-10 11-15 16 - 20 Select one: O a. was 15 O b. was 200 O C. was 185 O d. Frequency was 65 120 65 14 Refer to Exhibit 2-3. The number of workers who took at most 10 sick days per month 1
1. A report in a national magazine estimated that 39 percent of American husbands do not know the color of their wives' eyes. Bill Cornett is a marriage counselor in a clinic in New Orleans. He feels the figure is higher for husbands in the greater New Orleans area. A sample of 264 husbands in this area yielded 111 who did not know the true color of their wives' eyes. a. Conduct a test of significance to determine whether the value of 0.39 can be rejected as too low for husbands in New Orleans. Be sure to state your hypotheses, all relevant statistics, a list of technical conditions, and a conclusion to your test. b. Produce a relevant confidence interval designed to capture the true proportion of American husbands who do not know the color of their wives' eyes. Explain how your interval backs up the result of your test of significance from part a.
1. pg 287 Finger length and gender Is there a relationship between gender and relative finger length? To find out, we randomly selected 452 U.S. high school students who completed a survey. The two-way table summarizes the relationship between gender and which finger was longer on the left hand (index finger or ring finger). Longer finger Index finger Ring finger Same length Total Gender Female 78 82 52 212 Male 45 152 43 240 Total 123 234 95 452 Suppose we randomly select one of the survey respondents. Define events R: ring finger longer and F: female. (a) Find P(R | F). Interpret this value in context. (b) Given that the chosen student does not have a longer ring finger, what's the probability that this person is male? Write your answer as a probability statement using correct symbols for the events.
*42. Smartphone Ownership. The Pew Internet & American Life Project compiles data on smartphone ownership and publishes the results in the document Smartphone Ownership. The first two columns of the following table provide a percentage distribution for age of U.S. adults. The third column of the table shows the percentage of people in each age group who own a smartphone. Age group (years) Percentage of adults Percentage who own a smartphone 18–24 12.5 79 25–34 18.0 81 35-44 16.7 69 45–54 17.5 55 55–64 16.4 39 65+ 18.9 18 Suppose that a U.S. adult is selected at random. Determine the prob- ability that the person selected a. owns a smartphone, given that he or she is between 18 and 24 years old.
On the following pages you are presented with five problems. Your job is to examine the output and discuss whether there is a statistically significant relationship between the two variables, the pattern or direction of the relationship if the relationship is significant, and the strength of the relationship if the relationship is significant. AS you discuss the strength of the relationship, you will rely on an appropriate measure of association from those that have been given. For that determination, you will need to appropriately determine the level of measurement of each of the variables being examined. Please use the Measures of Association Chart I provided to help you with your determination. You may write your responses on a separate document or next to the problems on this one.
*3. What is the difference between ordinal and nominal data? Choose the correct answer below. A. Ordinal data are one notch above nominal data on the measurement hierarchy. Ordinal data can be rank-ordered on the basis of some relationship among them, while the order of nominal data is arbitrary. B. Ordinal data are one notch below nominal data on the measurement hierarchy. Nominal data can be rank-ordered on the basis of some relationship among them, while the order of ordinal data is arbitrary. c. Ordinal data are one notch above nominal data on the measurement hierarchy. Ordinal data have all the characteristics of interval data but also have a true zero point. D. Ordinal data are one notch above nominal data on the measurement hierarchy. Nominal data can be rank-ordered on the basis of some relationship among them, while the order of ordinal data is arbitrary.
1. Explain the difference between z-tests (which use categorical data), and t-tests (which use numerical data). 2. Conduct a t-test, both when given statistics, and when given data. 3. Conduct a t-test, 2-sample t-test, and paired t-test. 4. Differentiate between the five types of tests we have learned so far.
Given the following information, what is the coefficient of determination? x y 255 5, 75 4, 80 38 6,99 a.,.7690. b , - .5914. c.,.5914. d.,.4086. ง C 11. Given the following information, what is the coefficient of determination? (You may use EXCEL, or any other statistical package to compute this.) ✗ y 2 55 5 75 4 80 3 85 6 99 99 a. .7690. b. -.5914. C. .5914. d. .4086.
7. Wondering if there is a connection between a person's height and the number of tattoos they have, Mac asks 50 people how tall they are and how many tattoos they have. What type of study was used? a. Experimental b. Observational
Can you help me on 18 please and thank you?

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