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Researchers who are attempting to solve a real world problem developed their research ideas from ...

Researchers who are attempting to solve a real world problem developed their research ideas from everyday experiences.

Indicate whether the statement is true or false

When a change in the dependent variable could be due to the researcher's hypothesis or the participant's hypothesis, __________ is a threat to internal validity.

a. diffusion of treatments
b. instrumentation
c. placebo effect
d. demand characteristics

The independent variable is the variable manipulated in a study.

Indicate whether the statement is true or false

Your friend Joe wants to know about the study on monitor size and reaction time described in question 10 . Tell Joe how many groups it is possible that a particular participants would be exposed to given that the study was a within subjects design.

a. 1 of 3 groups
b. 2 of 3 groups
c. 3 of 3 groups
d. 2 of 2 groups

The probability of rejecting the null hypothesis when it is indeed false is known as .

a. sampling.
b. sample size.
c. effect size.
d. power.

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