A small study (n = 10) is designed to assess whether there is an association between smoking in pregnancy and low birth weight. Low-birth-weight babies are those born weighing <5.5 pounds. The following data represent the birth weights, in pounds, of babies born to mothers who reported smoking in pregnancy and to those who did not.

Mother smoked during pregnancy	5.0	4.2	4.8	3.3	3.9
The mother did not smoke during pregnancy	5.1	4.9	5.3	5.4	4.6

Is there a significant difference in birth weights between mothers who smoked during pregnancy and those who did not? Run the appropriate test at a 5% level of significance.