er the following distribution of scores with a mean of 90 and a standard deviation of 30. For the letters A, B, C, and D in the boxes beneath the eled "z" give the z-scores corresponding to each position in the distribution. One z-score is already filled in (-1). se you also want to standardize these scores to a "k" scale where the mean of k is 100 and the standard deviation is 15. For the letters E, F, G, in the boxes beneath the line labeled "k" give the k-scores corresponding to each position in the distribution. One k-score is already filled in 30 60 90 120 150 A -1 D