Life Expectancies Is there a relationship between the life expectancy for men and the life expectancy for women in a given country? A random sample of nonindustrialized countries was selected, and the life expectancy in years is listed for both men and women. Are the variables linearly related? Men 53.8 68.6 47.8 54.2 66.9 57.7 Women 47.4 72.7 48.3 44.6 77.0 58.1 (a) Draw the scatter plot for the variables. (b) Compute the value of the correlation coefficient. Round your answer to at least three decimal places. r=?
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Here is the scatter plot: Life Expectancies Women y 44.6 47.4 48.3 58.1 72.7 77.0 Men x 47.8 53.8 54.2 57.7 66.9 68.6 Show more…
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Life Expectancies A random sample of nonindustrialized countries was selected, and the life expectancy in years is listed for both men and women. Men: 53.8, 68.6, 47.8, 54.2, 66.9, 57.7 Women: 47.4, 72.7, 48.3, 44.6, 77.0, 58.1 The correlation coefficient for the data is r = 0.924 and α = 0.05. Should regression analysis be done? - The regression analysis should not be done. - The regression analysis should be done. Find the equation of the regression line. Round the coefficients to at least three decimal places. y' = a + bx a = b = Find women's life expectancy in a country where men's life expectancy = 59 years. Round your answer to at least three decimal places. Women's life expectancy is years.
Ana Carolina D.
Perform the following steps. a. Draw the scatter plot for the variables. b. Compute the value of the correlation coefficient. c. State the hypotheses. d. Test the significance of the correlation coefficient at $\alpha=0.05,$ using Table I. e. Give a brief explanation of the type of relationship. Assume all assumptions have been met. Is there a relationship between the life expectancy for men and the life expectancy for women in a given country? A random sample of nonindustrialized countries was selected, and the life expectancy in years is listed for both men and women. Are the variables linearly related? $$ \begin{array}{l|l|lllll} \text { Men } & 59.7 & 72.9 & 41.9 & 46.2 & 50.3 & 43.2 \\ \hline \text { Women } & 63.8 & 77.8 & 44.5 & 48.3 & 54.0 & 43.5 \end{array} $$
Correlation and Regression
Scatter Plots and Correlation
Life Expectancies Is there a relationship between the life expectancy for men and the life expectancy for women in a given country? A random sample of non industrialized countries was selected, and the life expectancy in years is listed for both men and women. Are the variables linearly related? $$ \begin{array}{l|cccccccc}{\text { Men }} & {59.7} & {72.9} & {41.9} & {46.2} & {50.3} & {43.2} & {} \\ \hline \text { Women } & {63.8} & {77.8} & {44.5} & {48.3} & {54.0} & {43.5}\end{array} $$ $$ \begin{array}{l}{\text { (The information in this exercise will be used for }} \\ {\text { Exercise } 22 \text { in Section } 10-2 \text { ) }}\end{array} $$
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