The peabody vocabulary test score has a mean of 100 and a standard deviation of 15. You tested a child score and was computed to be 77.? (a) What is the z score ?. (b) Determine the proportion of...

The peabody vocabulary test score has a mean of 100 and a standard deviation of 15. You tested a child score and was computed to be 77.?

(a) What is the z score ?.

(b) Determine the proportion of score above the child score.?

(c) Determine the percentile rank for the child score.

(round alla calculationsa to 2decimal places)