A random sample of 6 people, each 20 pounds overweight, volunteered to follow the same diet. After 3 months, their weight loss amounts (in pounds) were

12

5

14

19

15

8

[10 points] Find the range, sample mean, sample variance, and the standard deviation of this data set. Round your answers to one decimal place.

[5 points] What can you conclude about the weights of these people after 3 months of the same diet?