Question: A public health physician is interested in whether the birth weight of an infant (in ounces) is related to whether his/her mother smoked during pregnancy. Mothers were categorized as either smoking or non-smoking.

(a) State the null and research hypotheses. (2 points)

(b) Which statistical procedure would you use to determine whether there was a significant difference in the birth weights of infants born to smoking versus non-smoking mothers? (2 points)