A Researcher Expects a Treatment to Increase the Scores for Individuals

question 78

Multiple Choice

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 α = .05 but not with α = .01.
• B)The researcher should reject the null hypothesis with either α = .05 or α = .01.
• C)The researcher should fail to reject H0 with either α = .05 or α = .01.
• D)Cannot answer without additional information

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