Starting with the data values of 70 and 85, add three data values to your sample so

Question:

Starting with the data values of 70 and 85, add three data values to your sample so that the sample has the following: (Justify your answer in each case.)
a. A standard deviation of 5
b. A standard deviation of 10
c. A standard deviation of 15
d. Compare your three samples and the variety of values needed to obtain each of the required standard deviations.