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?
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 change ?.
A
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