If all possible samples of size 25 are drawn from a normal population with mean equal to 50 and standard deviation equal to 7, what is the probability that a sample mean upper x overbar will fall in the interval from mu subscript upper x overbarminus1.5sigma subscript upper x overbar to mu subscript upper x overbarminus0.9sigma subscript upper x overbar?

Which statement explains how you could use coordinate geometry to prove the opposite sides of a quadrilateral are congruent? a. use the slope formula to prove the slopes of the opposite sides are the same. b. use the slope formula to prove the slopes of the opposite sides are opposite reciprocals. c. use the distance formula to prove the lengths of the opposite sides are the same. d. use the distance formula to prove the midpoints of the opposite sides are the same.