You've been hired as the statistician for a political campaign! Currently, your campaign has received a few donations (in hundreds of dollars): {8, 1, 3, 4, 3, 7}.

1. What are the mean and median donation amounts (in dollars)?
2. A wealthy donor would like to make a new donation that raises the average donation from its current level to twice that amount. How much should the donor give (in dollars)?
3. Using R, find the standard deviation of the original six donations listed above (in dollars).