1. In a sample distribution, X = 56 corresponds to z = 1.00, and X = 47 corresponds to z = 20.50. Find the mean and standard deviation for the sample.
2. For each of the following populations, would a score of X =50 be considered a central score (near the middle of the distribution) or an extreme score (far out in the tail of the distribution)?
a. µ = 45 and s = 10
b. µ = 45 and s = 2
c. µ = 90 and s = 20
d. µ =60 and s = 20