Liberty Christian Academy Psyc 355 Exam 1 Questions 1-40 (LIBERTYCHRISTI)
Answers
Liberty Christian Academy Psyc 355 Exam 1 Questions 1-40
165 views 0 purchase
Course
Liberty Christian Academy Psyc 355 Exam 1 Questions 1-40 (LIBERTYCHRISTI)
Institution
University
Liberty Christian Academy Psyc 355 Exam 1 Questions 1-40
Question 1                                                                                                                   �...
liberty christian academy psyc 355 exam 1 questions 1 40
Written for
University
Liberty Christian Academy Psyc 355 Exam 1 Questions 1-40 (LIBERTYCHRISTI)
All documents for this subject (1)
Seller
Follow
solutions
Reviews received
Content preview
Question 1 2.5 out of 2.5 points
A study found statistically significant results for a hypothesis tested with an independent-samples t test.
The author of the study reported her effect size for the test as 0.82. According to Cohen's convention,
this effect size is considered:
Selected Answer: large.
Question 2 2.5 out of 2.5 points
A clinical researcher was interested in determining whether his interventions were effective in
minimizing depression symptoms among his participants. To assess the effectiveness of his treatment
program, he administered a depression inventory prior to his treatment and after his treatment. He
hypothesized that depression scores would be lower at time two compared to time one. He then
compared the mean differences between the two groups and found that his treatment was effective.
The dependent variable in this study is:
Selected Answer: depression scores.
Question 3 0 out of 2.5 points
The critical cutoff(s) for a two-tailed, paired-samples t test with 23 participants at a p level of 0.05 is
(are):
Selected Answer: –1.717 or 1.717.
Question 4 0 out of 2.5 points
A researcher studies 45 volunteer citizens from a small community and asks them about the amount of
caffeine (in milligrams) they ingest before and after lunch each day. The null hypothesis for this paired-
samples study could be:
Selected Answer: there is a difference between the amount of caffeine ingested before and after
lunch.
Question 5 2.5 out of 2.5 points
When scientists call a hypothesis test conservative, they mean that it is:
Selected Answer: difficult to reject the null hypothesis (i.e., the status quo).
, Question 6 2.5 out of 2.5 points
A researcher conducts a single-sample t test and finds statistical significance at the 0.01 level. The effect
size is then calculated and found to be 0.04. What might you conclude about the findings?
Selected Answer: While the results of the test are statistically significant, the effect size indicates that
they may not be practically significant. It might be the case that a very large sample was studied, driving
up the test statistic value.
Question 7 2.5 out of 2.5 points
In a within-groups design where one group is measured twice over time, the appropriate hypothesis test
is a(n):
Selected Answer: paired-samples t test.
Question 8 0 out of 2.5 points
The comparison distribution for an independent-samples t test is a distribution of:
Selected Answer: mean difference scores.
Question 9 2.5 out of 2.5 points
According to the null hypothesis, the mean difference for the comparison distribution in a paired-
samples t test is:
Selected Answer: always 0.
Question 10 2.5 out of 2.5 points
A study found statistically significant results for a hypothesis tested with an independent-samples t test.
The author of the study reported her effect size for the test as 1.24. What is true of the two sample
means?
Selected Answer: The two sample means are 1.24 standard deviations apart.
Question 11 2.5 out of 2.5 points
We have learned three t tests, including all of the following except:
Selected Answer: experimental-samples
Question 12 2.5 out of 2.5 points
Following are the results of an independent-samples t-test: t(18) = –2.11, p < 0.05. The results are:
Selected Answer: statistically significant.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller solutions. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $19.49. You're not tied to anything after your purchase.
