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- The city council of Pine Bluffs is considering increasing the number of police in an effort to reduce crime. Before making a final decision, the council asked the chief of police to survey other cities of similar size to determine the relationship between the number of police and the number of crimes reported. The chief gathered the following sample information. City Oxford Starksville Danville Athens ……….... Police 23 24 30 33 Number of Crimes 18 15 Click here for the Excel Data File 9 11 Number of crimes City Holgate Carey Whistler Woodville > Answer is complete but not entirely correct. 40.6081 X (90.0408) ► x Answer is complete and correct. 19✔ Police 24 20 19 27 a. Determine the regression equation. (Negative amounts should be indicated by a minus sign. Round your answers to 4 decimal places.) Number of Crimes 9 22 24 10 b. Estimate the number of crimes for a city with 21 police officers. (Round your answer to the nearest whole number.)The city council of Pine Bluffs is considering Increasing the number of police in an effort to reduce crime. Before making a final decision, the council asked the chief of police to survey other citles of similar size to determine the relationship between the number of police and the number of crimes reported. The chief gathered the following sample Information. Number of Number of City Oxford city Holgate Police Crimes Police Crimes 15 17 17 7 starksville Danville 17 13 Carey whistler 12 21 25 5 11 19 Athens 27 7 Woodville 22 6 Click here for the Excel Data File a. Determine the regression equation. (Round your answers to 4 decimal places. Negative value should be Indicated by a mlnus sign.) b. Estimate the number of crimes for a city with 20 police officers. (Round your answer to the nearest whole number.) Number of crimes c. Interpret the regression equation. For each policeman added, the number of crimes goes by approximately one.In , Addison Group and Kelton surveyed the work preferences and attitudes of working adults spread over three generations — Baby Boomers, Generation X, and Millennials (Society for Human Resource Management website). One question asked individuals if they would leave their current job to make more money at another job. The file Millennials contains the sample data, which is also summarized in the following table. Click on the datafile logo to reference the data. Generation Leave Job for More Money? Baby Boomer Generation X Millennial Yes 137 171 175 No 213 199 186 Conduct a test of independence to determine whether interest in leaving a current job for more money is independent of employee generation. Compute the value of the test statistic (to decimals). Do not round your intermediate calculation. What is the -value? Use Table 3 of Appendix B. The -value is . Using a level of significance, what is your conclusion? Conclude interest in leaving job for more money independent of the…
- Customer database A large philanthropic organizationkeeps records on the people who have contributed totheir cause. In addition to keeping records of past giving, the organization buys demographic data on neighbor-hoods from the U.S. Census Bureau. Eighteen of these variables concern the ethnicity of the neighborhood ofthe donor. Here are a histogram and summary statisticsfor the percentage of whites in the neighborhoods of500 donors:a) Which is a better summary of the percentage ofwhite residents in the neighborhoods, the mean orthe median? Explain.b) Which is a better summary of the spread, the IQR orthe standard deviation? Explain.c) From a Normal model, about what percentage ofneighborhoods should have a percent white within onestandard deviation of the mean?d) What percentage of neighborhoods actually have apercent white within one standard deviation of themean?e) Explain the discrepancy between parts c and d.Bachelor’s Completion. As reported by the U.S. Census Bureau in Educational Attainment in the United States, the percentage of adults in each state and the District of Columbia who have completed a bachelor’s degree is provided on the WeissStats site. a. obtain and interpret the quartiles. b. determine and interpret the interquartile range. c. find and interpret the five-number summary. d. identify potential outliers, if any. e. obtain and interpret a boxplot.a. Construct a boxplot for the data in this sample b. What type of shape does the distribution of the sample appear to have?
- SUBJECT: Engineering Data Analysis (Pls. don't plagiarize your answer. Thank you!) QUESTION: List down the methods of reducing sampling error. Briefly define and discuss the non sampling error. List down the causes for non sampling error.It is known through Operation Laban Altapresyon that 15% of adults from the Province o Realeza are hypertensive. Princess recently conducted a survey to determine the prevalence of high blood pressure among the towns of the Province of Realeza. Her findings are tabulated below. Table 1. Distribution of Survey Respondents by Town and Blood Pressure Status Blood Pressure Status Towns in Realeza Total Normotensive Hypertensive San Luis 368 46 414 Galindo 348 62 410 Coronacion 355 378 Given the provided data, identify if there has been a change in the prevalence of hypertension in the town of San Luis. SAMSUNG 23Researchers want to estimate the percentage of people who thought drinking and driving was a serious problem. Reserchers waited outside a bar to question people. They usually find 11%of bar patrons believe drinking and driving is a serious problem. a. identify the populatin of interest b. identify the sample c. identify the population parameter of interest d. identifywho if anyone was left out of the study
- 1. To understand the cooking and diet patterns of Americans, a research company surveyed 12,340 American adults (age 18 and older) during the year 2014 and asked about a variety of factors including age, gender, yearly income (in US $), and the number of hours spent cooking each week. Answer the following questions regarding the context of the survey: a. WHO is being measured? (What is the sample?) b. WHAT is being measured? (What are the variables?) For each variable, identify whether it is quantitative or categorical.In 2015, Addison Group and Kelton surveyed the work preferences and attitudes of 948 working adults spread over three generations - Baby Boomers, Generation X, and Millennials (Society for Human Resource Management website). One question asked individuals if they would leave their current job to make more money at another job. The file Millennials contains the sample data, which is also summarized in the following table. Click on the datafile logo to reference the data. DATA file Leave Job for More Money? Yes No What is the p-value? Use Table 3 of Appendix B. The p-value is less than 0.005 Using a 0.05 level of significance, what is your conclusion? Conclude interest in leaving job for more money is Baby Boomer 122 191 Generation Generation X 141 176 Conduct a test of independence to determine whether interest in leaving a current job for more money is independent of employee generation. Compute the value of the x² test statistic (to 2 decimals). Do not round your intermediate…A J.D. Power and Associates vehicle quality survey asked new owners a variety of questions about their recently purchased automobile. One question asked for the owner's rating of the vehicle using categorical responses of average, outstanding, and exceptional. Another question asked for the owner's education level with the categorical responses some high school, high school graduate, some college, and college graduate. Assume the sample data below are for 500 owners who had recently purchased an automobile. Education Quality Rating Some HS HS Grad Some College College Grad Average 30 30 20 60 Outstanding 50 50 50 90 Exceptional 20 20 30 50 a. Use a 0.05 level of significance and a test of independence to determine if a new owner's vehicle quality rating is independent of the owner's education. Compute the value of the x test statistic (to 2 decimals). Use Table 3 of Appendix B to find the p-value. The p-value is - Select your answer - What is your conclusion? - Select your answer - v…