Angie has a jar that contains 2 red marbles, 2 blue marbles, and no other marbles. she randomly draws 2 marbles from the jar. if the marbles are the same colour, she discards one and puts the other back into the jar. if the marbles are different colours, she discards the red marble and puts the blue marble back into the jar. she repeats this process a total of three times. what is the probability that the remaining marble is red?
(a) 1/2 (b) 1/4 (c) 2/3 (d) 1/3 (e) 0

If your score on your next statistics test is converted to a z score, which of these z scores would you prefer: minus2.00, minus1.00, 0, 1.00, 2.00? why? a. the z score of 2.00 is most preferable because it is 2.00 standard deviations above the mean and would correspond to the highest of the five different possible test scores. b. the z score of 0 is most preferable because it corresponds to a test score equal to the mean. c. the z score of minus2.00 is most preferable because it is 2.00 standard deviations below the mean and would correspond to the highest of the five different possible test scores. d. the z score of minus1.00 is most preferable because it is 1.00 standard deviation below the mean and would correspond to an above average