Suppose you have a sample {, … , }. if you were to use the population variance of this sample as an estimator for the true population variance, what would its bias be?

The product of two negative rational numbers is always zero sometimes zero never zero

(least common multiples) the answer that i had in the 1st step was lcm of airline tickets sold=72. idk if that even matters but just in case. ! three co-workers are busy selling airline tickets over the phone. in an 8-hour day, charles can sell 8 airline tickets, ann can sell 9 airline tickets, and michelle can sell 6 airline tickets. step 2 of 2: what is the smallest number of 8-hour days needed for each of them to achieve the same number of sales? it takes charles . it takes . it takes .

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)