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Author Question: A group of 100 students took a test. The mean score was 75, the standard deviation was 5, and the ... (Read 27 times)

jwb375

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on: Jul 8, 2018
A group of 100 students took a test. The mean score was 75, the standard deviation was 5, and the scores were normally distributed. About how many scores fell between 70 and 80?
 
  A) 34
  B) 68
  C) 95
  D) Impossible to determine

Question 2

If the bulk of scores from a test occurred at the upper end of the distribution, the distribution could be described as:
 
  A) Normal
  B) Bimodal
  C) Positively skewed
  D) Negatively skewed


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popopong

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Reply #1 on: Jul 8, 2018
Answer to Question 1

B

Answer to Question 2

D


jwb375

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Reply 2 on: Jul 8, 2018
Thanks for the timely response, appreciate it

pratush dev

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Reply 3 on: Yesterday
Excellent

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