Suppose a simple linear regression model is used to explain the relationship between x and y. A random sample of n = 21 values for the independent variable was selected, and the corresponding values of the dependent variable were observed.
a. Construct a scatter plot for these data. Is a simple linear regression model reasonable? Justify your answer.
b. Find the estimated regression line. Add a graph of this line to your scatter plot.
c. Estimate the true mean value of Y when x = 62.
d. Construct an ANOVA summary table, except for the p value.