Which relationship must be true to be able to use a normal distribution to find the margin of error for a data set with a sample proportion P and a sample size n?
A. np > 30
B. n(1 – P) ? np
C. n(1 - P) > 10
D. np < 10

Technicians have installed a center pivot, circular irrigator for a farm that covers 25 acres. a.) how long is the irrigation boom (in feet) from the center pivot to its farthest extent? b.) if the irrigation boom makes 4 full revolutions in a day, how many miles does the end of the boom travel in 5 days?