Recode the variable "race" into a dummy variable "black" such that it takes on the value 1 for African-American women and the value 0 for Caucasian women (hint |n Stata, use the code "codebook Race" to figure out the descriptions for unique values. In R, use view() and review the data in the new window to check how the data are entered). Run a regression using the new variable "black" as the independent variable, and keeping estradiol as the dependent variable (we will not use BMI) in this regression. What is the mean difference in estradiol between Caucasian and African American women? (up to 3 decimal points) [Mean difference = mean for African American minus mean for Caucasian] Choose the correct answer from below. Question 6 (1 point) J Saved Do we reject the null hypothesis which says that the mean estradiol levels are the same between the two groups? @ Yes