The graph below displays how many pieces of candy timmy and his five friends each received last halloween. within how many standard deviations of the mean do the values fall?
a. 2
b. 1
c. 3
d. 4

So the values are 16,19, 25, 32, 38, 40. I used an online standard deviation calculator and the value you look at is the Standard Error of the mean. In the screenshot provided it shows that the answer is 4. Sorry I couldn't be of more help and give you instructions on how to solve this without a calculator. I haven't done that math in a while. 

t + 3 = scott's age is the answer