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Author Question: Approximately what percentage of scores are between z=1 and z=2? a. 50 b. 68 c. 16 d. ... (Read 26 times)

jazziefee

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  • Posts: 505
on: Jun 19, 2018
Approximately what percentage of scores are between z=1 and z=2?
 
  a. 50
  b. 68
  c. 16
  d. 13.5

Question 2

Rich's first psychology exam score is +1 standard deviation from the mean in a normal distribution. The test has a mean of 60 and a standard deviation of 6 . Rich's percentile rank would be approximately:
 
  a. 70.
  b. 84.
  c. 66.
  d. Cannot say from the information given.


briseldagonzales

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  • Posts: 303
Reply #1 on: Jun 19, 2018
Answer to Question 1

d

Answer to Question 2

b


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