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Student and Parent Heights A random sample of 29 community college students were asked their height in inches and the height of their biological parent of the same gender. The output of a
a. What is the slope of the regression line? Interpret the value of the slope in context.
b. Test the hypothesis that the slope is 0 (significance level is 0.05), and explain what your answer means.
c. If the slope were 1, what would that say about the association?
d. Test the hypothesis that the slope is 1 using a significance level of 0.05. Use the table for Exercise 14.18 to decide whether the p-value is less than 0.05. The degrees of freedom (df) is 27
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Chapter 14 Solutions
EP INTRODUCTORY STATISTICS-MYSTATLAB
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- Life Expectancy The following table shows the average life expectancy, in years, of a child born in the given year42 Life expectancy 2005 77.6 2007 78.1 2009 78.5 2011 78.7 2013 78.8 a. Find the equation of the regression line, and explain the meaning of its slope. b. Plot the data points and the regression line. c. Explain in practical terms the meaning of the slope of the regression line. d. Based on the trend of the regression line, what do you predict as the life expectancy of a child born in 2019? e. Based on the trend of the regression line, what do you predict as the life expectancy of a child born in 1580?2300arrow_forwardFind the equation of the regression line for the following data set. x 1 2 3 y 0 3 4arrow_forward
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