To study the relationship between age and absenteeism for his corporation, a personnel director gathers data on the age and the number of days that the employee was absent for the previous years:
a. Plot a scatter diagram.
b. Calculate the least squares regression line to estimate the number of days an employee was absent.
c. Estimate the number of days that a 50 year old employee was absent.
d. Calculate the Pearson product moment correlation coefficient.
e. What proportion of the total variability in the number of days absent can be explained by the variation in age?
f. Test for independence. Calculate the P-value.
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