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Author Question: The fact that the two groups were led by different persons created the possibility of incurring ... (Read 39 times)

fasfsadfdsfa

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on: Jun 20, 2018
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 2

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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annierak

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

d

Answer to Question 2

a SEm=2.91


fasfsadfdsfa

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Reply 2 on: Jun 20, 2018
Excellent

xiazhe

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Reply 3 on: Yesterday
:D TYSM

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