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Home Q & A Board Science-Related Homework Help Psychology
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Rnaprh Rnaprh
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Posts: 547
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6 years ago
If a z-score is at the 90th percentile,
 
  a. 90 of the values fall at or below the z-score.
  b. 10 of the values fall above the z-score.
  c. Both a and b are true.
  d. None of the above are true.

Question 2

The fact that the two groups were led by different persons created the
  possibility of incurring
 
  a. the Type 2 error
  b. the halo effect
  c. the Hawthorne effect
  d. confounding variables

Question 3

The standard deviation of the population of individual adult male weight
  scores is 25 pounds. A random sample of adult males produces a mean of 180
  pounds.
 
  a. Calculate the standard error of the mean.
  b. Test the hypothesis, via the z test, that this sample could still be
   representative of a population whose mean is known to be 170 pounds.
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RedishRedish
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Posts: 342
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6 years ago
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Rnaprh Author
wrote...
#2
6 years ago
Ready for finals now Monkey
wrote...
#3
6 years ago
Good luck my friend!
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