A researcher is interested in determining if the model used for the distribution of main economic concerns in theyear 2003 for residents in a certain county can still be used in the year 2004. A sample of 370 residents from thatcounty was surveyed in 2004. The following table displays the model for the distribution of economic concernsfor the year 2003 and the observed number of sampled respondents in the survey for the same economicconcerns for the year 2004.Economic concern1: Jobs2: Medical care4: Housing Total3: HighereducationModel from 20035%36%27%32%100%Counts in 20042513811691370Under the null hypothesis that the model from the previous year can still be used, what is the distribution of thechi-square statistic?○ x ²(2)O x ²(3)O x ²(4)O x²(1)

Answered: Image /qna-images/answer/b3675e48-5b33-41e9-98cb-b0e0515b1132.jpg

Answered: A researcher is interested in…

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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Determine the relationship between job performance rating (y) and scores on four tests. The data are as follows: y x1 x2 x3 x4 11.2 56.5 71.0 38.5 43.0 14.5 59.5 72.5 38.2 44.8 17.2 69.2 76.0 42.5 49.0 17.8 74.5 79.5 43.4 56.3 19.3 81.2 84.0 47.5 60.2 24.5 88.0 86.2 47.4 62.0 80.5 44.5 58.1 21.2 78.2 16.9 69.0 72.0 41.8 48.1 14.8 58.1 68.0 42.1 46.0 20.0 80.5 85.0 48.1 60.3 13.2 58.3 71.0 37.5 47.1 22.5 84.0 87.2 51.0 65.2 Estimate b0 in the multiple regression model. Use 2 decimal places. y = b0 + b1 x1 + b2 x2 + b3 x3 + b4 x4.
Analyze the data and write a short report. Your report must contain A frequency distribution of respondents’ age, gender and race. Age Frequency 17 6 18 6 19 5 20 3 Gender Frequency Female 9 Male 11 Race Frequency African 6 Chinese 2 Indian 12 Tables showing the total average consumption of the three types of foods and the two types of drinks. Food Total Consumption Percentage African 36 46.15% Chinese 32 41.03% Indian 10 12.82% Drinks Total Consumption Percentage Juice 44 60.27% Water 29 39.72% Cross-tabulation of the respondent’s Age and sex with drink preference. JUICE Sex Total Age Female Male 17 1 3 4 18 2 2 4 19 1 0 1 20 3 0 3 TOTAL 7 5 12…
Benchmarks. Examine the following tables from the 2009 Financial Trend Monitoring Report for the Town of Oakdale that reports on fiscal year 2008. The performance indicators selected are total revenue and revenue per capita. The town provides three reference groups with which to compare Oakdale: Aaa-rated municipalities, comparison municipalities, and the state median. Since local government budgeting in this state is driven by the property tax levy cap, this is a key variable in comparing municipalities. Aaa-Rated Municipality FY08 Total Revenue FY08 Rev per Cap State Rank Comparison Municipality FY08 Total Revenue FY08 Rev per Cap State Rank Delta $ 49,794,904 $4,342 12 Dover $356,895,723 $3,521 27 Monroe 111,784,312 3,683 21 Oakdale 175,058,152 3,065 45 Schoolcraft 47,219,656 3,605 24 Cook 71,477,390 2,954…
A real estate agency, located in a metropolitan area in the northeastern U.S., kept data on the various types of properties purchased in the area. Historically, 15% of purchases were for condominiums, 30% were for townhouses, 40% for single family homes, 10% for commercial properties and 5% for land. With changing demographics, the agency wondered if the current distribution matches the historical distribution. Recent data showed the following: Type of Property Condos Townhouses Homes Commercial Land Frequency 89 121 78 25 12 Based on the historical distribution, we would expect how many homes to be purchased? Question content area bottom Part 1 A. 130 B. 121 C. 129.95 D. 122.54 E. 100
Identify the type of observational study (cross-sectional, retrospective, or prospective) described below. A research company uses a device to record the viewing habits of about 10,000 households, and the data collected over the next 10 years will be used to determine whether the proportion of households tuned to a particular children's program decreases. Which type of observational study is described in the problem statement? O A prospective study O A retrospective study A cross-sectional study F4 F5 F6 F7 F8 F9 DELL F10 (... F11 -O F12 O PrtScr Insert Delete PgUp 。 Next PgDn Ho
Males 74 75 69 72 75 73 88 76 71 64 67 71 72 82 71 83 82 78 80 81 75 Females 75 57 61 71 79 78 81 65 57 80 73 83 86 79 65 70 69 76 55 66 79 5. Construct stem-and-leaf plots for each data set using four stems. You should have two separate plots: one for men and one for women. 6. Why is it important to have the same stems for both plots, even though one plot has an empty stem? 7. Comment on the distributions. What type on conclusions can you make about the heart rates of males and females? Do they appear to be very different?
Consider the following data representing the price of plasma televisions (in dollars). 1260, 1355, 1156, 1297, 1054, 1225, 1375, 1244, 1281, 1138, 1368, 1075, 1373, 1126, 1067, 1285, 1119, 1209, 1150, 1208, 1284 Class 1034-1093 1094-1153 1154-1213 1214-1273 1274-1333 1334-1393 Frequency Price of Plasma Televisions (in Dollars) Class Boundaries Midpoint Relative Frequency Copy Data Cumulative Frequency Step 6 of 7: Calculate the relative frequency of the third class. Determine your answer as a simplified fraction.
A survey collected data on annual credit card charges in seven different categories of expenditures: transportation, groceries, dining out, household expenses, home furnishings, apparel, and entertainment. Using data from a sample of 42 credit card accounts, assume that each account was used to identify the annual credit card charges for groceries (population 1) and the annual credit card charges for dining out (population 2). Using the difference data, with population 1– population 2, the sample mean difference was d = $870, and the sample standard deviation was s,= $1,125. (a) Formulate the null and alternative hype to test for no difference between the population mean credit card charges for groceries and the population mean credit card charges for dining out. 0> Prt :°H 0 = Pri :ºH O O Ho: Hdso H: H=0 (b) Calculate the test statistic. (Round your answer to three decimal places.) What is the p-value? (Round your answer to four decimal places.) Can you conclude that the population…
The table to the right shows data found at a government census website, under a "Did You Know" panel. What type of data source is the information presented here based on? Private Sector Total Employment in a State All 2008 Q2 2009 Q2 Change Female 537,290 517,948 −3.6% Male 504,214 477,491 −5.3% Retail Trade Female 168,942 146,473 −13.3% Male 162,502 144,302 −11.2% Question content area bottom Part 1 Choose the correct answer below. A. The information is the outcome of an experiment that was conducted. B. The information is the result of an observational study that was conducted. C. The information is the result of a survey that was conducted. D. The information is collected via ongoing business activities. E. The information is distributed by an organization or individual.
Determine the relationship between job performance rating (y) and scores on four tests. The data are as follows: y x1 x2 x3 x4 11.2 56.5 71.0 38.5 43.0 14.5 59.5 72.5 38.2 44.8 17.2 69.2 76.0 42.5 49.0 17.8 74.5 79.5 43.4 56.3 19.3 81.2 84.0 47.5 60.2 24.5 88.0 86.2 47.4 62.0 80.5 44.5 58.1 16.9 69.0 72.0 41.8 48.1 14.8 58.1 68.0 42.1 46.0 20.0 80.5 85.0 48.1 60.3 13.2 58.3 71.0 37.5 47.1 22.5 84.0 87.2 51.0 65.2 21.2 78.2 Estimate b4 in the multiple regression model. Use 2 decimal places. y = b0 + b1 x1 + b2 x2 + b3 x3 + b4 x4. 4
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4. Draw a line / curve of best fit for the following sets of data & identify if they are linear, quadratic or exponential: 2500 1500 1000 500 300 200 -100 25 50

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