Exercise

Quantifying the relationship between smoking during pregnancy and birth weight

Let's construct a bootstrap interval for the difference in mean weights of babies born to smoker and non-smoker mothers. The ncbirths_complete_habit data frame you created earlier is available to use.

Instructions 1/2

XP

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Generate 1500 bootstrap difference in means for birth weight by smoking habit.

Specify birth weight versus smoking habit.
Generate 1500 bootstrap replicates.
Calculate the difference in means, with order nonsmoker then smoker.