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Home Q & A Board Science-Related Homework Help Psychology
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tyrich tyrich
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6 years ago
A researcher conducts a hypothesis test to evaluate the effect of a treatment. The hypothesis test produces a z-score of z = 2.37. Assuming that the researcher is using a two-tailed test, what decision should be made?
 
  A) The researcher should reject the null hypothesis with  = .05 but not with  = .01.
  B) The researcher should reject the null hypothesis with either  = .05 or  = .01.
  C) The researcher should fail to reject H0 with either  = .05 or  = .01.
  D) The researcher should ignore the results.

Question 2

One use of a regression equation is to increase the accuracy of predicting Y scores. What determines the proportion of the variability in the Y scores that is predicted by the regression equation?
 
  A) r2
  B) 1 - r2
  C) r
  D) 1 - r

Question 3

The critical boundaries for a hypothesis test are z = +1.96 and 1.96. If the z-score for the sample data is z = 1.90, then what is the correct statistical decision?
 
  A) Fail to reject H1
  B) Fail to reject H0
  C) Reject H1
  D) Reject H0
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jjjjjljl;jjuhkjjjjjjljl;jjuhkj
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6 years ago
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tyrich Author
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#2
6 years ago
I can't even begin to explain how much your help meant to me!
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#3
6 years ago
Happy to hear that, good luck with the rest of them
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