Multiple Choice
A behavioral neuroscientist is testing the effects of adrenaline on memory using a group of 12 rats.The researcher is unsure about how much adrenaline might produce an effect on memory.One group of rats will be injected with placebo saline (0 micrograms of adrenaline) .The other group will be injected with a dose of adrenaline.When deciding between a 2-microgram dose or an 8-microgram dose (both of which are safe) , the researcher opts to use the 8-microgram dose.The researcher has:
A) made a Type II error.
B) exaggerated the difference between the levels of the independent variable, thereby increasing statistical power.
C) exaggerated the difference between the levels of the independent variable, thereby decreasing statistical power.
D) given the rats an overdose of adrenaline.
Correct Answer:

Verified
Correct Answer:
Verified
Q5: If a real difference exists between a
Q6: If an effect is significant but the
Q7: A Cohen's d value of 0.2 indicates
Q8: Meta-analysis involves:<br>A) finding all studies published on
Q9: Statistical power is calculated as 0.93.This means
Q11: As sample size increases, the test statistic
Q12: If the mean difference between levels of
Q13: Sample size can affect whether statistically significant
Q14: Before conducting a power analysis, a researcher
Q15: The _ estimate acknowledges the amount of