A sociologist wants to know if there is a correlation between the ages of spouses. The following table lists the ages of nine randomly selected married couples.

Ages of the husbands	49	25	40	52	58	32	43	42	47
Ages of the wives	43	28	30	57	52	27	52	43	43

a. Find the sample correlation r using Microsoft Excel or Google Sheets. Round to three significant digits.

r =

b. Test the correlation using the traditional method and Table A-3. Let = 0.05.

H₀ =

H₁ =

Critical value(s) =

Round the same as the critical value. Test Statistic =

H₀

Conclusion: There correlation between the ages of spouses.