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BESC 3010 Final Exam Questions And Answers | Guaranteed Success
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BESC 3010 Final Exam Questions AndAnswers | Guaranteed Success
What inferential test should be used to compare two sample means to each other?
CORRECT ANSWERS the two-sample t-test
The most important difference between Cohen's d and the t-test is that Cohen's d...
CORRECT ANSWERS is not affected by sample size
What is the formula for the degrees of freedom (df) for a two-sample t-test? CORRECT
ANSWERS n-2
if a researcher wants to compare the effects of an antidepressant to the effects of a
placebo on levels of anxiety, then what is the independent variable (that is, the IV)?
CORRECT ANSWERS medication: antidepressant vs. placebo
when the means of two groups are the same, then Cohen's d.... CORRECT ANSWERS
will equal 0
a two-sample t-test is an appropriate test when... CORRECT ANSWERS two samples
are being compared on an interval or ratio level variable
imagine that a researcher conducts a one-tailed (i.e., directional) two-sample t-test with
a critical value of -1.83 and gets an observed value (or test value) of t = +1.98. What is
the proper conclusion in this case? CORRECT ANSWERS retain the null hypothesis
Cohen's d indicates the number of... CORRECT ANSWERS standard deviations
between two means
if a researcher wants to compare the effects of an antidepressant to the effects of a
placebo on levels of anxiety, then what is the dependent variable (that is, the DV)?
CORRECT ANSWERS levels of anxiety
if a researcher gathers data from participates before and after they participate in an
exercise training program and wants to know whether their performance scores
improved, then he should use.... CORRECT ANSWERS a one-tailed, repeated
measures t-test
If a research conducts an inferential test (such as a t-test) and retains (i.e., fails to
reject) the null hypothesis, then what is the probability of a Type I error? CORRECT
ANSWERS 0.00
one assumption of the two-sample t-test is that.... CORRECT ANSWERS the two
samples are independent of one another
, imagine that a researcher conducts a two-sample t-test with critical values of +-2.10 and
gets an observed value (or test value) of t = 1.98. What is the proper conclusion in this
case? CORRECT ANSWERS retain the null hypothesis
if a researcher wants to compare the effects of an antidepressant to the effects of a
placebo on levels of anxiety, then what is the grouping variable? CORRECT ANSWERS
medication: antidepressant vs. placebo
the comparison group in a repeated measures t-test is... CORRECT ANSWERS each
person's own score at time 1
imagine that a researcher conducts a repeated measures t-test with critical values of +-
2.78 and gets an observed value (or test value) of t = -3.30. What is the proper
conclusion in this case? CORRECT ANSWERS reject the null hypothesis
when the means of two samples are being compared and Cohen's d = 0, then...
CORRECT ANSWERS the means are identical
if a researcher conducts an inferential test (such as a t-test) and rejects the null
hypothesis, then what is the probability of a type II error? CORRECT ANSWERS 0.00
if n = infinity, then what is the critical value of t for alpha = .05? CORRECT ANSWERS
+-1.96
if a researcher conducts a t-test with an alpha of .01 and gets a p-value of .25, then the
researcher should... CORRECT ANSWERS retain the null hypothesis
if you want to compare the means of two different groups to each other then you should
use... CORRECT ANSWERS a two-sample t-test
what is the formula for the degrees of freedom (df) for a two-sample t-test? CORRECT
ANSWERS n-2
as the means of two groups become more similar, Cohen's d will... CORRECT
ANSWERS approach 0
if you conduct a one-time (i.e., directional) two-sample t-test with a critical value of +-
2.20 and gets an observed value of t = -3.53, then what should you do? CORRECT
ANSWERS retain the null hypothesis
if you conducted an experiment to compare the effects of two different online ad
campaigns on the number of clickthroughs, then what is the dependent variable (DV)?
CORRECT ANSWERS the number of clickthroughs
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