Question

These are the heights of Natasha and her four friends:
5 feet, 2 inches; 5 feet, 3 inches; 5 feet, 7 inches; 5 feet, 9 inches; 6 feet, 0 inches

In which situation would the mean of the heights go up the most?
a.add 2 friends that are 5 feet, 8 inches.
b.You add 1 friend that is 6 feet, 5 inches and 1 friend that is 5 feet, 3 inches.
c.You add 1 friend that is 5 feet, 10 inches
d.You add 4 friends that are 5 feet, 9 inches.

Answer 1

plz someone help!!!!!!!!!!

Answer 2

besides angelxtorch

Answer 3

B.

Answer 4

k thanks so much :)

Answer 5

The heights are, in inches, 62, 63, 67, 69, 72.
The total height is 333 in. The mean height is 66.6 in.
A. 333 in. + 68 in. + 68 in. = 469 in. Mean: 67 in.
B. 333 in. + 77 in. + 63 in. = 473 in. Mean: 67.57 in.
C. 333 in. + 70 in. = 403 in. Mean: 67.17 in.
D. 333 in. + 4 * 69 in. = 609 in. Mean: 67.67 in.

Answer 6

Answer is D.