These data were obtained from a sample of counties in southwestern Pennsylvania and indicate the number (in thousands) of tons of bituminous coal produced in each county and the number of employees working in coal production in each county. Predict the amount of coal produced for a county that has 500 employees.

Do a complete regression analysis by performing these steps.
a. Draw a scatter plot.
b. Compute the correlation coefficient.
c. State the hypotheses.
d. Test the hypotheses at α = 0.05. Use Table I.
e. Determine the regression line equation.
f. Plot the regression line on the scatter plot.
g. Summarize the results.

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No. of employees 110 731 103 20 118 1162 103 752 Tons y227 5410 5328 147 729 8095 635 6157