You've drawn a simple random sample from a population. the standard deviation of this sample is a(n):

average.
parameter.
variance.
statistic.
range.

Round 0.866 to the nearest hundredth

Kevin is an insurance salesman. when he sells a policy, he makes 20 percent of the policy premium (p) up front; then each year the policy is active, he receives 15 percent of the original premium. which equation could be used to figure his total commission on a policy that has been active for five years? c=0.80p c=0.20p + 0.15p c=0.35p + 4(0.15) c=0.95p

What is the length of the midsegment of a trapezoid with bases of length 15 and 25 ?