To get the best deal on a CD player, Tom called eight appliance ...

[Jipu 123]

To get the best deal on a CD player, Tom called eight appliance stores and asked the cost of a specific model. The prices he was quoted are listed below:
 
  225 288 207 245 370 138 413 322
  Compute the standard deviation s.
  A) 609,408.0 B) 666,640.0 C) 346.0 D) 90.4

Question 2

Describe the difference between z scores and area scores. Show each score's relationship to the graph of the standard normal distribution and discuss the possible sign values for each score.
 
  What will be an ideal response?

[kilada]

Answer to Question 1

D

Answer to Question 2

z scores measure the number of SD above or below the mean, and thus they can be either positive or negative. Area scores refer to the area under the curve between the mean and the corresponding z score. Area scores are always positive.

[Jipu 123]

Excellent

[peter]

Thanks for the timely response, appreciate it