The main score on the physics test was 75 points Amy score was 67 points which was two standard devastations below the mean What is the variance of the data set a-2 b-4 c-8 d-16

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.