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avaasadi avaasadi
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6 years ago
A random sample of n = 4 scores is obtained from a population with a mean of  = 80 and a standard deviation of  = 10 . If the sample mean is M = 90, what is the z-score for the sample mean?
 
  a. z = 20.00 c. z = 2.00
  b. z = 5.00 d. z = 1.00

Question 2

A sample of n = 4 scores has a standard error of 10 points. For the same population, what is the standard error for a sample of n = 16 scores?
 
  a. 1 c. 5
  b. 2.5 d. 10

Question 3

A sample obtained from a population with  = 12 has a standard error of 2 points. How many scores are in the sample?
 
  a. n = 36 c. n = 6
  b. n = 24 d. n = 3
Textbook 
Business Statistics

Business Statistics


Edition: 2nd
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slayer909slayer909
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avaasadi Author
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6 years ago
Thank you for being such a great website leader! All of your answers were right.
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