A brokerage firm is curious about the proportion of clients who have high-risk stocks in their stock portfolio. Let the proportion of clients who have high-risk stocks be p. If the brokerage firm wants to know if the proportion of clients who have high-risk stocks is less than 15%, what are the null and alternative hypotheses?

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.