Question 21 2 pts Use the R code on page 173 (after installing and librarying the package Weighted.Desc.Stat), to find the variance of X from above, rounded to 4 decimal places. Question 22 1 pts Consider X from above. Multiply its number of trials by its probability of success and probability of failure (hint: failure is the complement of success, so it happens with "opposite" probability). What number do you get, rounded to 4 decimal places? No new data to save. Last checked at 12:01am Submit Qu