if you conduct a study with 5 groups and 40 people, what would your "degrees of freedom between" be?
Given,
k = number of groups = 5
n = total sample = 40
Degrees of freedom between = dfbetween = k - 1 = 5 - 1 = 4
if you conduct a study with 5 groups and 40 people, what would your "degrees of...
You intend to conduct an ANOVA with 4 groups in which each group will have the same number of subjects: n=16n=16. (This is referred to as a "balanced" single-factor ANOVA.) What are the degrees of freedom for the numerator? d.f.(treatment) = What are the degrees of freedom for the denominator? d.f.(error) =
You intend to conduct an ANOVA with 7 groups in which each group will have the same number of subjects: n=6n=6. (This is referred to as a "balanced" single-factor ANOVA.) What are the degrees of freedom for the numerator? d.f.(treatment) = What are the degrees of freedom for the denominator? d.f.(error) =
Dr. Jackman wants to conduct a study on the incidence of HIV in people aged 20-40 in Washington, D.C. over the next 3 years? She comes to you because he needs help with his study design. She only wants to include people who are 20-40, and they need to be HIV negative. Based on this information which study design is most appropriate? Prospective cohort study Case control study Crossover trial None of the provided Case series need help answering
You intend to conduct an ANOVA with 42 subjects, which will be divided into 7 treatment groups. What are the degrees of freedom for the numerator? d.f.(treatment) = What are the degrees of freedom for the denominator? d.f.(error) =
How could you conduct a study on the extent to which people obey authority in a way that minimizes risks and deception as much as possible? (Note: Such a study would not have to look at all like Milgram’s.) Provide a substantive, complete summary of the proposed study and how it minimizes risks/deception.(3 paragraphs at least)
1 and 2 please
1. Explain why you would conduct a t test rather than a z test. In other words, what is the difference between a one sample t test and a one sample z test? 2. Because of what is discussed in question 1, some of the components of calculating at value are different from the components of a z value. Specifically, the t value utilizes degrees of freedom. Explain what degrees of freedom means (you can include...
6. Consider the following study results concerning Age and Church Attendance: Age 50-59 Church Attendance 20-29 72 78 94 106 Yes No 63 87 21 69 Test to see if the proportion of people who attend church is the same for all age groups. (α-0.05) a) How many degrees of freedom are in the test? b) What is the value of the test statistic? c) Do the proportion of people who attend church differ among the age groups? Explain. d)...
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 5% margin of error at a 95% confidence level, what is the minimum sample size needed for the study? Give your answer as a whole number.
4) A study of depression and exercise was conducted. A total of
5 groups were used: each group differs by the extent to which group
members exercise. A depression rating (scale: 1-100, a continuous
variable) was given to all 1215 participants in the sample. An
incompleted ANOVA table is provided below. What is the obtained F
(i.e., value in Cell [8])?
Sum of Squares
df
Mean Square
F
Between-Group
[1]
[2]
[5]
[8]
Within-Group
138
[3]
[6]
[9]
Total
220...
Briefly describe how you would conduct a mixed methods study that focuses on the association between Mental Distress and HIV infection in an adult population. Address what type of mixed methods study and the level of Mixing.