Question

All of the members of the harvey family are very

tall. their heights are 84 inches, 84 inches, 77
inches, 63 inches, 70 inches, 70 inches and 'x'
inches. if the mean height of the family members
is 75 inches, about how tall is person 'x' ?
77 inches
84 inches
70 inches
63 inches

Answer 1

77 "

Explanation:

'mean' is the average of all of the heights

( 84 + 84 + 77 + 63 + 70 + 70 + x) / 7 = 75

x = 77