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Author Question: A Pearson correlation is computed for a sample of n = 18 pairs of X and Y values. What correlations ... (Read 111 times)

ahriuashd

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on: Jun 20, 2018
A Pearson correlation is computed for a sample of n = 18 pairs of X and Y values. What correlations are statistically significant with  = .05, two tails?
 
  A) correlations between 0.468 and -0.468
  B) correlations greater than or equal to 0.468 and correlation less than or equal to -0.468
  C) correlations between 0.456 and -0.456
  D) correlations greater than or equal to 0.456 and correlation less than or equal to -0.456

Question 2

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
  B) z = 5.00
  C) z = 2.00
  D) z = 1.00


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zhanghao

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

B

Answer to Question 2

C


ahriuashd

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Reply 2 on: Jun 20, 2018
Excellent

cdmart10

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

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