Author Question: A researcher expects a treatment to increase the scores for individuals in a population. The ... (Read 60 times)

humphriesbr@me.com

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A researcher expects a treatment to increase the scores for individuals in a population. The treatment is evaluated using a one-tailed hypothesis test, and the test produces z = +2.40 . Based on this result, what is the correct statistical decision?
 
  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. Cannot answer without additional information

Question 2

A researcher conducts a hypothesis test to evaluate the effect of a treatment that is expected to increase scores. The hypothesis test produces a z-score of z = 2.27 . If the researcher is using a one-tailed test, what is the correct statistical decision?
 
  a. Reject the null hypothesis with  = .05 but not with  = .01.
  b. Reject the null hypothesis with either  = .05 or  = .01.
  c. Fail to reject the null hypothesis with either  = .05 or  = .01.
  d. Cannot answer without additional information



mcomstock09

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Answer to Question 1

B

Answer to Question 2

A



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