With SPSS, use the data set bd1.sav and the variables tob2 (dichotomized smoking status) and case (yes or no esophageal cancer) to test the following: Is there a difference in the incidence of esophageal cancer by tobacco exposure? (Hint: Are the exposure and the outcome variables independent of each other?) Include in your response the 5-step approach to hypothesis testing and an explanation of your decision to reject or fail to reject the null hypothesis.
Some research suggests that smoking by the mother during pregnancy can have an impact on the birth weight of the newborn.