A researcher expects a treatment to produce an increase in the population mean. The treatment is evaluated using a one tailed hypothesis test, and the test produces z = +1.85. Based on this result, what is the correct statistical decision?Group of answer choicesThe researcher should fail to reject H0 with either α = .05 or α = .01.The researcher should change α.The researcher should reject the null hypothesis with either α = .05 or α = .01.The researcher should reject the null hypothesis with α = .05 but not with α = .01.
Question
A researcher expects a treatment to produce an increase in the population mean. The treatment is evaluated using a one tailed hypothesis test, and the test produces z = +1.85. Based on this result, what is the correct statistical decision?Group of answer choicesThe researcher should fail to reject H0 with either α = .05 or α = .01.The researcher should change α.The researcher should reject the null hypothesis with either α = .05 or α = .01.The researcher should reject the null hypothesis with α = .05 but not with α = .01.
Solution
The researcher should reject the null hypothesis with α = .05 but not with α = .01.
Similar Questions
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 = 2.37. If the researcher is using a one-tailed test, what is the correct statistical decision?Group of answer choicesFail to reject the null hypothesis with either α = .05 or α = .01.Reject the null hypothesis with α = .05 but not with α = .01.This cannot be answered without additional information.Reject the null hypothesis with either α = .05 or α = .01.
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