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Author Question: Suppose that scores on a test are normally distributed with a mean of 80 and a standard deviation of ... (Read 99 times)

dejastew

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on: Jul 25, 2018
Suppose that scores on a test are normally distributed with a mean of 80 and a standard deviation of 8. You have been asked to find the 70th percentile.
 
  After sketching a standard normal curve and shading the area of interest, the next step in solving this problem is to use the table of areas. Would you look for 0.7 in the body of the table or in the left-hand column? Explain your reasoning.

Question 2

Multiple choice questions on a test that include as one of the choices none of the above are an example of what type of question?
 
  A) open question B) reader response question
  C) closed question D) framing question


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connor417

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Reply #1 on: Jul 25, 2018
Answer to Question 1

Answers will vary. Possible answer: You would look for 0.7 in the body of the table since it represents a percentage (an area), not a z-score.

Answer to Question 2

C


dejastew

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Reply 2 on: Jul 25, 2018
Excellent

abro1885

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Reply 3 on: Yesterday
Great answer, keep it coming :)

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