Question

Attention: Due to a bug in Google Chrome, this page may not function correctly. Click here to learn more. Aa Aa 7. Gravetter/Wallnau/Forzano, Essentials - Chapter 7End-of-chapter question 21 A normal distribution has a mean of μ-60 and a standard deviation of σ = 12. For each of the following samples, compute the z-score for the sample mean, and determine whether the sample mean is a typical, representative value or an extreme value for a sample of this size. M 64 for n -4 scores: z0.67,which isa typicalvalue. M-64 for n = 9 scores: which is value. M 66 for n -16 scores: , which is value. M = 66 for n = 36 scores: , which is value.

Answer 1

$z=\sqrt{2}(64-60)/12=0.67,~which~is~a~typical~value\\ z=\sqrt{9}(64-60)/12=1,~which~is~a~typical~value\\ z=\sqrt{16}(66-60)/12=2,~which~is~representative~value\\ z=\sqrt{36}(66-60)/12=3,~which~is~extreme~value\\$