PS390 Statistical Reasoning in Psychology Exam 3 Answers (Ashworth College)
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A. The rate of learn<strong>in</strong>g for the sample of rats tested with colorful<br />
wallpaper will be no different than the population of rats tested under<br />
ord<strong>in</strong>ary circumstances.<br />
•<br />
B. The rate of learn<strong>in</strong>g for the sample of rats tested with colorful<br />
wallpaper will be faster than the population of rats tested under<br />
ord<strong>in</strong>ary circumstances.<br />
•<br />
C. The rate of learn<strong>in</strong>g for the population of rats tested with colorful<br />
wallpaper will be no different than the population of rats tested under<br />
ord<strong>in</strong>ary circumstances.<br />
•<br />
D. The rate of learn<strong>in</strong>g for the population of rats tested with colorful<br />
wallpaper will be faster than the population of rats tested under<br />
ord<strong>in</strong>ary circumstances.<br />
Question 13 of 20<br />
5.0/ 5.0 Po<strong>in</strong>ts<br />
Anxiously-attached <strong>in</strong>dividuals <strong>in</strong> the general population tend to have low levels of satisfaction <strong>in</strong> their romantic<br />
relationships (μ = 10, σ = 5, positively skewed distribution). A therapist <strong>in</strong>terested <strong>in</strong> <strong>in</strong>creas<strong>in</strong>g relationship<br />
satisfaction provides a week-long relaxation sem<strong>in</strong>ar to 11 anxious <strong>in</strong>dividuals. After complet<strong>in</strong>g the sem<strong>in</strong>ar,<br />
relationship satisfaction <strong>in</strong> the sample averages 12.<br />
What is the correspond<strong>in</strong>g Z score for the sample's mean score on the comparison distribution?<br />
•<br />
A. 0.66<br />
•<br />
B. 1.32<br />
•<br />
C. 0.44<br />
•<br />
D. 1.74<br />
Question 14 of 20<br />
0.0/ 5.0 Po<strong>in</strong>ts<br />
Anxiously-attached <strong>in</strong>dividuals <strong>in</strong> the general population tend to have low levels of satisfaction <strong>in</strong> their romantic<br />
relationships (μ = 10, σ = 5, positively skewed distribution). A therapist <strong>in</strong>terested <strong>in</strong> <strong>in</strong>creas<strong>in</strong>g relationship<br />
satisfaction provides a week-long relaxation sem<strong>in</strong>ar to 11 anxious <strong>in</strong>dividuals. After complet<strong>in</strong>g the sem<strong>in</strong>ar,<br />
relationship satisfaction <strong>in</strong> the sample averages 12.<br />
What is the shape of the comparison distribution?<br />
•<br />
A. Positively skewed<br />
•<br />
B. Negatively skewed<br />
•<br />
C. Approximately normal<br />
•<br />
D. Cannot be determ<strong>in</strong>ed from the <strong>in</strong>formation provided<br />
Question 15 of 20<br />
5.0/ 5.0 Po<strong>in</strong>ts<br />
If a population is not normally distributed, the shape of a distribution of means:<br />
•<br />
A. will always be normal.<br />
•<br />
B. will never be normal.<br />
•<br />
C. will be normal when the sample size is more than 30.<br />
•<br />
D. will not be normal when the sample size is more than 30.<br />
Question 16 of 20<br />
0.0/ 5.0 Po<strong>in</strong>ts<br />
An experimental psychologist is <strong>in</strong>terested <strong>in</strong> whether the color of an animal's surround<strong>in</strong>gs affects learn<strong>in</strong>g