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City planners believe that lorger cities are populated by older residents. To investigate the relationship, data on population and median age in 10 lorge cities were collected. Population City (in millions) Median age 31.5 city Chicago, IL Dallas, TX Houston, TX Los Angeles, CA Now York, NY Philadelphia, PA Phoenix, AZ San Antonio, TX San Diego, CA San Jose, CA 2.833 1.233 2.144 3.849 30.5 3e.9 31.6 34.2 8.214 1.448 34.2 1.513 30.7 1.297 1.257 31.7 32.5 e.930 32.6 D Click here for the Excel Dato File a. Create a scotter plot of the data. Whot do you observe? 1. On the graph below, use the polnt tool to plot the polnt corresponding to the first Population City and Its Medlan age (Population 1). 2. Repeat the process for the remalnder of the sample (Population 2, Population 3, .). 3. To enter exact coordinates, double-click on the polnt and enter the exact coordinates of x and y. Plot of Age and Population 34- 33- Population (in milions) reset b-1. Colculate the correlation coefficient. (Round your answer to 3 decimal places.) Correlation coeflicient b-2 What does it indicate about the relotionship between median age and population? Mediumage

City planners believe that lorger cities are populated by older residents. To investigate the relationship, data on population and median age in 10 lorge cities were collected. Population City (in millions) Median age 31.5 city Chicago, IL Dallas, TX Houston, TX Los Angeles, CA Now York, NY Philadelphia, PA Phoenix, AZ San Antonio, TX San Diego, CA San Jose, CA 2.833 1.233 2.144 3.849 30.5 3e.9 31.6 34.2 8.214 1.448 34.2 1.513 30.7 1.297 1.257 31.7 32.5 e.930 32.6 D Click here for the Excel Dato File a. Create a scotter plot of the data. Whot do you observe? 1. On the graph below, use the polnt tool to plot the polnt corresponding to the first Population City and Its Medlan age (Population 1). 2. Repeat the process for the remalnder of the sample (Population 2, Population 3, .). 3. To enter exact coordinates, double-click on the polnt and enter the exact coordinates of x and y. Plot of Age and Population 34- 33- Population (in milions) reset b-1. Colculate the correlation coefficient. (Round your answer to 3 decimal places.) Correlation coeflicient b-2 What does it indicate about the relotionship between median age and population? Mediumage

MATLAB: An Introduction with Applications
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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City planners believe that lorger cities ore populated by older residents. To investigate the relationship, data on population and median age in 10 lorge cities were collected. Population city (in millions) 2.833 Median age City Chicago, IL Dallas, TX 31.5 1.233 2.144 3e.5 Houston, TX 30.9 Los Angeles, CA New York, NY Philadelphia, PA Phoenix, AZ San Antonio, TX San biego, CA San Jose, CA 3.849 31.6 34.2 34.2 3e.7 8.214 1.448 1.513 31.7 32.5 32.6 1.297 1.257 e.93e E Click here for the Excel Data File a. Create o scotter plot of the dota. What do you observe? 1. On the graph below, use the polnt tool to plot the polnt corresponding to the first Population City and its Median age (Population 1). 2 Repeat the process for the remalnder of the sample (Population 2. Population 3, .. ). 3. To enter exact coordinates, double-click on the polnt and enter the exact coordinates of x and y. Plot of Age and Population 31- 30 19 Population (in millions) reset b-1. Colculote the correlotion coefficient. (Round your answer to 3 decimal places.) Correlation coellicient b-2 What does it indicate about the relotionship between median age and population? The correlation coefficient indicates a weak relationship belween papulation and median age.
Transcribed Image Text:City planners believe that lorger cities ore populated by older residents. To investigate the relationship, data on population and median age in 10 lorge cities were collected. Population city (in millions) 2.833 Median age City Chicago, IL Dallas, TX 31.5 1.233 2.144 3e.5 Houston, TX 30.9 Los Angeles, CA New York, NY Philadelphia, PA Phoenix, AZ San Antonio, TX San biego, CA San Jose, CA 3.849 31.6 34.2 34.2 3e.7 8.214 1.448 1.513 31.7 32.5 32.6 1.297 1.257 e.93e E Click here for the Excel Data File a. Create o scotter plot of the dota. What do you observe? 1. On the graph below, use the polnt tool to plot the polnt corresponding to the first Population City and its Median age (Population 1). 2 Repeat the process for the remalnder of the sample (Population 2. Population 3, .. ). 3. To enter exact coordinates, double-click on the polnt and enter the exact coordinates of x and y. Plot of Age and Population 31- 30 19 Population (in millions) reset b-1. Colculote the correlotion coefficient. (Round your answer to 3 decimal places.) Correlation coellicient b-2 What does it indicate about the relotionship between median age and population? The correlation coefficient indicates a weak relationship belween papulation and median age.
c-1. Compute the slope. Slope c-2 Report and interpret the coefficient of determination. Coefficient of determination d. Write the regression equation that predicts median age. e. Is the slope of the regression line significantly different from zero? The p-value to lest if the slope af the regression line significantly different from zero is 0.1901 With a significance level of 0.05 and the p value, we would the null hypothesis that the slope is zero. f. Summarize the results of this analysis. The results indicate linear relationship between a city's median age and its population.
Transcribed Image Text:c-1. Compute the slope. Slope c-2 Report and interpret the coefficient of determination. Coefficient of determination d. Write the regression equation that predicts median age. e. Is the slope of the regression line significantly different from zero? The p-value to lest if the slope af the regression line significantly different from zero is 0.1901 With a significance level of 0.05 and the p value, we would the null hypothesis that the slope is zero. f. Summarize the results of this analysis. The results indicate linear relationship between a city's median age and its population.
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