The Null Hypothesis Population is an actual or theoretical set of population scores that would result if _________
a. the experiment were done on the entire population and the independent variable had no effect
b. the experiment were done on the sample and the independent variable had no effect
c. the experiment were done on the entire population and the independent variable had a real effect
d. the subjects in the population believed the null hypothesis was true
A
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In a two-factor experiment with 2 levels of factor A and 2 levels of factor B, three of the treatment means are essentially identical and one is substantially different from the others. What result(s) would be produced by this pattern of treatment means?
a. A main effect for factor A b. A main effect for factor B c. An interaction between A and B d. The pattern would produce main effects for both A and B, and an interaction.
If an odd number of scores are put in order from lowest to highest, the score in the middle position is the:
A) mode. B) mean. C) median. D) range.
Hypotheses of the form "I expect this would happen if" are associated with:
a. deductive reasoning. b. inductive reasoning. c. theory-driven research. d. deductive reasoning and theory-driven research.
Peyton, a 20-year-old woman, gets severe flulike symptoms within 2 weeks of having sex with her boyfriend. She suspects an HIV infection after the sex and decides to do an HIV test without consulting a doctor. This test requires her to prick her finger, send the sample to a licensed laboratory, and then call in for results the next business day. In the context of HIV testing, identify the test method used by Peyton in this scenario.
A. the OraQuick In-Home HIV Test B. the Home Access HIV-1 Test System C. the CD4 T-cell count D. the antibody screening test