Answer:
Z = 8.41
Step-by-step explanation:
Given that standard deviation = 72
Mean = 60
Z = marginal error
Z = 72/√60
Z = 72/7.746
Z = (9.036)(0.9312)
It equals 5- hope this helps---
x = 55.866 ft.
39^2 + 40^2 = x^2
1521 + 1600 = 3121
sqrt(3121) = 55.8659
Rounded = 55.866
Make sure to add the ft.
