BESC 3010 Final Exam Questions And Answers 100% Verified.
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BESC 3010
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BESC 3010
BESC 3010 Final Exam Questions And Answers 100% Verified.
What inferential test should be used to compare two sample means to each other? - correct two-sample t-test
The most important difference between Cohen's d and the t-test is that Cohen's d... - correct not affected by sample ...
BESC 3010 Final Exam Questions And
Answers 100% Verified.
What inferential test should be used to compare two sample means to each other? -
correct answer.the two-sample t-test
The most important difference between Cohen's d and the t-test is that Cohen's d... -
correct answer.is not affected by sample size
What is the formula for the degrees of freedom (df) for a two-sample t-test? - correct
answer.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 answer.medication: antidepressant vs. placebo
when the means of two groups are the same, then Cohen's d.... - correct answer.will
equal 0
a two-sample t-test is an appropriate test when... - correct answer.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 answer.retain the null hypothesis
Cohen's d indicates the number of... - correct answer.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 answer.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 answer.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
answer.0.00
one assumption of the two-sample t-test is that.... - correct answer.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 answer.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
answer.medication: antidepressant vs. placebo
the comparison group in a repeated measures t-test is... - correct answer.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 answer.reject the null hypothesis
when the means of two samples are being compared and Cohen's d = 0, then... -
correct answer.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 answer.0.00
if n = infinity, then what is the critical value of t for alpha = .05? - correct answer.+-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 answer.retain the null hypothesis
if you want to compare the means of two different groups to each other then you should
use... - correct answer.a two-sample t-test
what is the formula for the degrees of freedom (df) for a two-sample t-test? - correct
answer.n-2
as the means of two groups become more similar, Cohen's d will... - correct
answer.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
answer.retain the null hypothesis
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