BESC 3010 FINAL EXAM QUESTIONS AND ANSWERS
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
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
