# Pause Problems – Chapter 8 (Salkind)

Question 1
Imagine we conduct a study to determine how long it takes salesclerks to approach and help hearing-disabled customers. If differences do emerge between these two IV levels, can we say confidently that the differences are due to deafness, or might there be another variable at play (like chance) that better accounts for any observed differences? As your Pause-Problem, think of two factors that account for why helping times might differ between conditions (other than deafness vs. hearing)
Question 2 0 pts
I have a simple question for you to answer for your second “Pause-Problem”: Why is it important that the tails of a normal curve never touch the X-axis? You tell me!
Question 3 0 pts
This Pause-Problem might take some thought. First, rank order the following z scores in terms of distance from the mean: +2, -3, -1, +1, 0 (tell me which comes first in terms of distance from the mean to which is furthest). Second, tell me why it comes in that ranking