Find the closest point to y in the subspace w spanned by bold v 1v1 and bold v 2v2. yequals=left bracket start 4 by 1 matrix 1st row 1st column negative 15 2nd row 1st column negative 1 3rd row 1st column 1 4st row 1st column 2 endmatrix right bracket −15 −1 1 2 , bold v 1v1equals=left bracket start 4 by 1 matrix 1st row 1st column 1 2nd row 1st column 1 3rd row 1st column negative 1 4st row 1st column negative 2 endmatrix right bracket 1 1 −1 −2 , bold v 2v2equals=left bracket start 4 by 1 matrix 1st row 1st column 5 2nd row 1st column 1 3rd row 1st column 0 4st row 1st column 3 endmatrix right bracket

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