HCD 300 - Homework 10 Exam Questions and Answers Graded A+
Researchers want to determine whether or not there is a difference in systolic blood pressure
based on how many hours a person exercises per week. They divide a sample of 72 people into
3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours
per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than
5 hours per week. Researchers measure and record the systolic blood pressure for each
participant. They choose α = 0.05 level to test their results.
How do you interpret this finding? There ____ enough evidence to conclude that there is a
difference between the blood pressure measurements for the 3 groups at the 0.05 significance
level. - Answers - is
A group of 20 people were asked to remember as many items as possible from a list before and
after being taught a memory device. Researchers want to see if there is a significant difference
in the amount of items that people are able to remember before and after being taught the
memory device. They also want to determine whether or not men and women perform
differently on the memory test. They choose α = 0.05 level to test their results.
True or False, performance on the memory test before and after being taught the memory
device varies based on gender. - Answers - False
F(2, 33) = 5.5, p < 0.01
How many groups were in this study? - Answers - 3
F(2, 33) = 5.5, p < 0.01
How many participants were in this study? - Answers - 36
A group of 20 people were asked to remember as many items as possible from a list before and
after being taught a memory device. Researchers want to see if there is a significant difference
in the amount of items that people are able to remember before and after being taught the
memory device. They also want to determine whether or not men and women perform
differently on the memory test. They choose α = 0.05 level to test their results.
What is the within groups degrees of freedom for this study? - Answers - 36
Researchers want to determine if caffeine affects reaction time. They divide a sample of 150
people into 3 groups. Group 1 gets a regular drink with no caffeine, group 2 gets a drink with 95
mg of caffeine, and group 3 gets a drink with 250 mg of caffeine. Each group is then given a test
, to gauge their reaction time. What is the appropriate test to use? - Answers - One-way ANOVA
Researchers want to determine whether or not there is a difference in systolic blood pressure
based on how many hours a person exercises per week. They divide a sample of 72 people into
3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours
per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than
5 hours per week. Researchers measure and record the systolic blood pressure for each
participant. They choose α = 0.05 level to test their results.
What is the between groups degrees of freedom for this study? - Answers - 2
ANOVA with replication is also known as? - Answers - repeated measures
F(2, 33) = 5.5, p < 0.01
What is the F ratio? - Answers - 5.5
Researchers want to determine whether or not there is a difference in systolic blood pressure
based on how many hours a person exercises per week. They divide a sample of 72 people into
3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours
per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than
5 hours per week. Researchers measure and record the systolic blood pressure for each
participant. They choose α = 0.05 level to test their results.
Based on the determination of significance, the researcher should make the decision to
___________. - Answers - reject the null hypothesis
Researchers want to determine the effects of gender and socioeconomic status (i.e. high,
medium, and low) on student achievement. What is the appropriate test to use? - Answers - two-
way ANOVA
Simple ANOVA is also known as? - Answers - One-way ANOVA
Trish conducts an analysis which shows that the level of alcohol consumption affects reaction
times more when a person is sleep-deprived than when a person is well-rested. This is an
example of ______. - Answers - interaction
A group of 20 people were asked to remember as many items as possible from a list before and
after being taught a memory device. Researchers want to see if there is a significant difference
in the amount of items that people are able to remember before and after being taught the
memory device. They also want to determine whether or not men and women perform
differently on the memory test. They choose α = 0.05 level to test their results.
Researchers want to determine whether or not there is a difference in systolic blood pressure
based on how many hours a person exercises per week. They divide a sample of 72 people into
3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours
per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than
5 hours per week. Researchers measure and record the systolic blood pressure for each
participant. They choose α = 0.05 level to test their results.
How do you interpret this finding? There ____ enough evidence to conclude that there is a
difference between the blood pressure measurements for the 3 groups at the 0.05 significance
level. - Answers - is
A group of 20 people were asked to remember as many items as possible from a list before and
after being taught a memory device. Researchers want to see if there is a significant difference
in the amount of items that people are able to remember before and after being taught the
memory device. They also want to determine whether or not men and women perform
differently on the memory test. They choose α = 0.05 level to test their results.
True or False, performance on the memory test before and after being taught the memory
device varies based on gender. - Answers - False
F(2, 33) = 5.5, p < 0.01
How many groups were in this study? - Answers - 3
F(2, 33) = 5.5, p < 0.01
How many participants were in this study? - Answers - 36
A group of 20 people were asked to remember as many items as possible from a list before and
after being taught a memory device. Researchers want to see if there is a significant difference
in the amount of items that people are able to remember before and after being taught the
memory device. They also want to determine whether or not men and women perform
differently on the memory test. They choose α = 0.05 level to test their results.
What is the within groups degrees of freedom for this study? - Answers - 36
Researchers want to determine if caffeine affects reaction time. They divide a sample of 150
people into 3 groups. Group 1 gets a regular drink with no caffeine, group 2 gets a drink with 95
mg of caffeine, and group 3 gets a drink with 250 mg of caffeine. Each group is then given a test
, to gauge their reaction time. What is the appropriate test to use? - Answers - One-way ANOVA
Researchers want to determine whether or not there is a difference in systolic blood pressure
based on how many hours a person exercises per week. They divide a sample of 72 people into
3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours
per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than
5 hours per week. Researchers measure and record the systolic blood pressure for each
participant. They choose α = 0.05 level to test their results.
What is the between groups degrees of freedom for this study? - Answers - 2
ANOVA with replication is also known as? - Answers - repeated measures
F(2, 33) = 5.5, p < 0.01
What is the F ratio? - Answers - 5.5
Researchers want to determine whether or not there is a difference in systolic blood pressure
based on how many hours a person exercises per week. They divide a sample of 72 people into
3 groups based on how many hours they exercise per week. Group 1 exercises less than 2 hours
per week, Group 2 exercises between 2 and 5 hours per week, and Group 3 exercises more than
5 hours per week. Researchers measure and record the systolic blood pressure for each
participant. They choose α = 0.05 level to test their results.
Based on the determination of significance, the researcher should make the decision to
___________. - Answers - reject the null hypothesis
Researchers want to determine the effects of gender and socioeconomic status (i.e. high,
medium, and low) on student achievement. What is the appropriate test to use? - Answers - two-
way ANOVA
Simple ANOVA is also known as? - Answers - One-way ANOVA
Trish conducts an analysis which shows that the level of alcohol consumption affects reaction
times more when a person is sleep-deprived than when a person is well-rested. This is an
example of ______. - Answers - interaction
A group of 20 people were asked to remember as many items as possible from a list before and
after being taught a memory device. Researchers want to see if there is a significant difference
in the amount of items that people are able to remember before and after being taught the
memory device. They also want to determine whether or not men and women perform
differently on the memory test. They choose α = 0.05 level to test their results.
