Question: Below is the life expectancy for an individual born in the United States in certain years.

a. Decide which variable should be the independent variable and which should be the dependent variable.

b. Draw a scatter plot of the ordered pairs.

c. Calculate the least squares line. Put the equation in the form of: Y= a + bx

d. Find the correlation coefficient. Is it significant?

e. Find the estimated life expectancy for an individual born in 1950 and for one born in \(1982\).

f. Why aren’t the answers to part (e) the values on the above chart that correspond to those years?

g. Use the two points in (e) to plot the least squares line on your graph from (b)

h. Based on the above data, is there a linear relationship between the year of birth and life expectancy?

i. Are there any outliers in the above data?

j. Using the least squares line give an accurate estimate for that year? Explain why or why not.