HCD 300 Exam Practice Questions
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Graded A+
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
True or false, this finding is statistically significant. - Answer- - True
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
What is the degrees of freedom for this study? - Answer- - 24
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
What is the test statistic? - Answer- - -3.13
What is the Excel function for a two-sample t-test with dependent samples? - Answer- -
TTEST
Under which circumstances would a t test of dependent samples be appropriate
(choose one or more)
- There are three groups of scores
- The same participants are not being tested twice
- Participants are being tested more than once
- There are two groups who received different interventions - Answer- - Participants are
being tested more than once
, A group of 44 women with gestational diabetes were assigned to one of two groups.
Group 1 received standard care, and group 2 participated in group counseling visits.
Researchers want to determine whether or not the birthweights of the infants of the
mothers who participated in the group counseling visits were significantly different than
the birth weights of mothers who received standard care at the α = 0.05 level.
Group 1: 4350, 4225, 4650, 5400, 3850, 4450, 4375, 3950, 4525, 5200, 4800, 4275,
4175, 4230, 4650, 4300, 4650, 4725, 4325, 4225, 4350, 4585
Group 2: 4395, 4375, 4225, 3335, 3975, 4020, 3725, 3825, 4125, 4425, 4375, 4055,
4500, 4875, 3855, 3955, 4355, 3975, 4550, 4325, 4675, 4745
What is the test statistic? - Answer- - 2.32
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
What is thee proper test to use? - Answer- - two-sample t-test for dependent samples
The rule of thumb we use in this class to distinguish between equal variance and
unequal variance is to determine if the variance of one group is more than double that of
the other. If so, we use the test for unequal variance. - Answer- - True
Which of the following are provided in the output of the t test data analysis tools (choose
one or more) - Answer- - two-tailed critical value
- t-test statistic
- one-tail critical value
-degrees of freedom
A group of 44 women with gestational diabetes were assigned to one of two groups.
Group 1 received standard care, and group 2 participated in group counseling visits.
Researchers want to determine whether or not the birthweights of the infants of the
mothers who participated in the group counseling visits were significantly different than
the birth weights of mothers who received standard care at the α = 0.05 level.
Group 1: 4350, 4225, 4650, 5400, 3850, 4450, 4375, 3950, 4525, 5200, 4800, 4275,
4175, 4230, 4650, 4300, 4650, 4725, 4325, 4225, 4350, 4585
Group 2: 4395, 4375, 4225, 3335, 3975, 4020, 3725, 3825, 4125, 4425, 4375, 4055,
4500, 4875, 3855, 3955, 4355, 3975, 4550, 4325, 4675, 4745
What is the proper test to use? - Answer- - two-sample t-test for independent samples
with Solutions Newest | Already
Graded A+
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
True or false, this finding is statistically significant. - Answer- - True
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
What is the degrees of freedom for this study? - Answer- - 24
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
What is the test statistic? - Answer- - -3.13
What is the Excel function for a two-sample t-test with dependent samples? - Answer- -
TTEST
Under which circumstances would a t test of dependent samples be appropriate
(choose one or more)
- There are three groups of scores
- The same participants are not being tested twice
- Participants are being tested more than once
- There are two groups who received different interventions - Answer- - Participants are
being tested more than once
, A group of 44 women with gestational diabetes were assigned to one of two groups.
Group 1 received standard care, and group 2 participated in group counseling visits.
Researchers want to determine whether or not the birthweights of the infants of the
mothers who participated in the group counseling visits were significantly different than
the birth weights of mothers who received standard care at the α = 0.05 level.
Group 1: 4350, 4225, 4650, 5400, 3850, 4450, 4375, 3950, 4525, 5200, 4800, 4275,
4175, 4230, 4650, 4300, 4650, 4725, 4325, 4225, 4350, 4585
Group 2: 4395, 4375, 4225, 3335, 3975, 4020, 3725, 3825, 4125, 4425, 4375, 4055,
4500, 4875, 3855, 3955, 4355, 3975, 4550, 4325, 4675, 4745
What is the test statistic? - Answer- - 2.32
A group of 25 people were asked to remember as many items as possible from a list
before and after being taught a memory device. Researchers choose α = 0.05 level to
test their results.
Group 1: 3, 5, 4, 5, 5, 5, 4, 5, 5, 8, 7, 7, 7, 6, 7, 8, 7, 9, 5, 6, 7, 7, 6, 8, 8
Group 2: 5, 6, 5, 5, 7, 8, 5, 6, 6, 8, 8, 7, 8, 6, 8, 9, 6, 8, 5, 6, 7, 6, 7, 8, 9
What is thee proper test to use? - Answer- - two-sample t-test for dependent samples
The rule of thumb we use in this class to distinguish between equal variance and
unequal variance is to determine if the variance of one group is more than double that of
the other. If so, we use the test for unequal variance. - Answer- - True
Which of the following are provided in the output of the t test data analysis tools (choose
one or more) - Answer- - two-tailed critical value
- t-test statistic
- one-tail critical value
-degrees of freedom
A group of 44 women with gestational diabetes were assigned to one of two groups.
Group 1 received standard care, and group 2 participated in group counseling visits.
Researchers want to determine whether or not the birthweights of the infants of the
mothers who participated in the group counseling visits were significantly different than
the birth weights of mothers who received standard care at the α = 0.05 level.
Group 1: 4350, 4225, 4650, 5400, 3850, 4450, 4375, 3950, 4525, 5200, 4800, 4275,
4175, 4230, 4650, 4300, 4650, 4725, 4325, 4225, 4350, 4585
Group 2: 4395, 4375, 4225, 3335, 3975, 4020, 3725, 3825, 4125, 4425, 4375, 4055,
4500, 4875, 3855, 3955, 4355, 3975, 4550, 4325, 4675, 4745
What is the proper test to use? - Answer- - two-sample t-test for independent samples
