What mean () functions and formula notations do I use to answer the questions

## [1] 27.2037 Use the information above about the mean () function and form Question 5: Report the mean of (a) the weights of all babies. (b) the weights of those born to smoking mothers. (c) the weights of those born to non-smoking mothers. The sd() function computes the standard deviation of the in mean () function. Question 6: Report the standard deviation of