Find the mean and range. 18 23 10 39 22 17 16 15 a. mean = 20; range = 32 b. mean = 20; range = 29 c. mean = 18.1; range = 28 d. mean = 21.9; range = 29

Option b is correct.

mean = 20 ;  range = 29

Step-by-step explanation:

Formula for mean is given by:

Given that:

18, 23, 10, 39, 22, 17, 16, 15

Here,

Total number of observations(n) = 8

⇒

Therefore, the mean for the given data is, 20

Formula for range (R) is given by:

From the given data:

and  

then;

Therefore, the range for the given data is, 29

a) 0.25x times 3. (could be wrong on equation.)

b) 2.25 pound of dark chocolate. (can i eat all the chocolate? plz? anyway, again, could be wrong, but i hope im right. all the chocolate together should be 5.25 pounds)

have a good day!