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Home Q & A Board Science-Related Homework Help Psychology
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kq kq
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6 years ago
A random sample of n = 16 scores is selected from a normal distribution with  = 500 and  = 200 . For this sample, which of the following is true?
 
  a. p(402   b. p(425
Question 2

A random sample of n = 9 scores is selected from a normal distribution with  = 80 and  = 12 . What is the probability that the sample mean will be between 76 and 84?
 
  a. 0.9974 c. 0.3830
  b. 0.6826 d. 0.2586

Question 3

A sample of n = 4 scores is selected from a normal population with a mean of  = 50 and a standard deviation of  = 20 . What is the probability of obtaining a sample mean greater than M= 48?
 
  a. p = 0.6554 c. p = 0.5793
  b. p = 0.3446 d. p = 0.4207

Question 4

A sample of n = 16 scores is selected from a population with  = 100 and  = 32 . If the sample mean is M= 104, what is the z-score for this sample mean?
 
  a. 2.00 c. 0.50
  b. 1.00 d. 0.25
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mrs_adairmrs_adair
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kq 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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