6) Calculate the z scores for a distribution with a mean of 150 and a standard deviation of 15 for the following raw scores. Which of the following is correct? a) if raw score = 135, z score = -5.8 b) if raw score = 140, z score = -0.67 c) if raw score = 170, z score = -3.33 d) ifraw score = 185, z score = 2.33 7) If a normal distribution has a mean of 35 and a standard deviation of 5, what value would be +1.5 standard deviations from the mean? a) 40 b) 42.5 c) 27.5 d) 30 8) If a z score = 2.5, it is standard deviations above the mean. a) l b) -2.5 c) 3 d) 2.5