3. The following data are based on information from the book Life in America's Small Cities (by G.S. Thomas, Prometheus Books). Let x be the percentage of 16-to-19-year-olds not in school and not high school graduates. Let y be the reported violent crimes per 1000 residents. Six small cities in Arkansas (Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville) reported the following information about x and y: 24.2 19.0 18.2 14.9 91.0 17.5 Y 13.0 4.4 9.3 1.3 0.8 3.6 a) Draw a scatter diagram displaying the data. b) Find correlation coefficient r. c) Find the equation of the least -squares line. d) Use the least-squares line to predict the violent crime rate per 1000 residents for a city that has 24% of 16-to-19 year olds not in school and not high school graduates.

3. The following data are based on information from the book Life in America's Small Cities (by G.S. Thomas, Prometheus Books). Let x be the percentage of 16-to-19-year-olds not in school and not high school graduates. Let y be the reported violent crimes per 1000 residents. Six small cities in Arkansas (Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville) reported the following information about x and y: 24.2 19.0 18.2 14.9 91.0 17.5 Y 13.0 4.4 9.3 1.3 0.8 3.6 a) Draw a scatter diagram displaying the data. b) Find correlation coefficient r. c) Find the equation of the least -squares line. d) Use the least-squares line to predict the violent crime rate per 1000 residents for a city that has 24% of 16-to-19 year olds not in school and not high school graduates.

Name: 3. The following data are based on information from the book Life in
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Description: 3. The following data are based on information from the book Life in America'sSmall Cities (by G.S. Thomas, Prometheus Books). Let x be the percentage of16-to-19-year-olds not in school and not high school graduates. Let y be thereported violent cri

MATLAB: An Introduction with Applications

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2-Proportion Test

In a 2-proportion test, two separate proportions are measured at the same time, and their similarity is evaluated. It is also known as a 2-proportion z-test, and a comparison of two different proportions is done in this method.

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3. The following data are based on information from the book Life in America's
Small Cities (by G.S. Thomas, Prometheus Books). Let x be the percentage of
16-to-19-year-olds not in school and not high school graduates. Let y be the
reported violent crimes per 1000 residents. Six small cities in Arkansas
(Blytheville, El Dorado, Hot Springs, Jonesboro, Rogers, and Russellville)
reported the following information about x and y:
24.2
19.0
18.2
14.9
91.0
17.5
Y
13.0
4.4
9.3
1.3
0.8
3.6
a) Draw a scatter diagram displaying the data.
b) Find correlation coefficient r.
c) Find the equation of the least -squares line.
d) Use the least-squares line to predict the violent crime rate per
1000 residents for a city that has 24% of 16-to-19 year olds not in
school and not high school graduates.

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