When the outliners are removed, how does the mean change?
a. the mean decreases by 2.75.
b. the mean increases by 2.75.
c. the mean increases by 3.25.
d. there are no outliers.

a) the mean decreases by 2.75

Step-by-step explanation:

dot plot with 1 on 18 2 on 38 1 on 40 3 on 44 1 on 46 1 on 48 the mean decreases by 2.75

$4034.40

the perimeter of the field is the sum of the lengths of the four sides:

47 yd + 158 yd + 47 yd + 158 yd = 410 yd

the cost of 3 ft (1 yd) of fence is 3×$3.28 = $9.84.

so the cost of jake's wood perimeter fance is

(410 yd) × ($9.84 /yd) = $4034.40