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Author Question: The standard deviation of the population of individual Digit Span scores is 3.00. (The Digit Span ... (Read 89 times)

casperchen82

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on: Jun 20, 2018
The standard deviation of the population of individual Digit Span scores is 3.00. (The Digit Span test is a sub-test of the Wechsler IQ test). A random
  sample of 20 subjects yielded a mean Digit Span score of 7.25.
 
  a. Calculate the standard error of the mean.
  b. Test the hypothesis, using the z test, that the sample could be
  representative of a population whose mean is known to be 10.00.

Question 2

Percentage of scores falling above a z of -.67
 
  What will be an ideal response?


srodz

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Reply #1 on: Jun 20, 2018
Answer to Question 1

a SEm= .67

Answer to Question 2

74.86


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