Question
In: Math
One attempt was to investigate the effect of two treatments on the formation of tartar in...
One attempt was to investigate the effect of two treatments on the formation of tartar in dogs. In addition to the two treatment groups, there was also a control group. in the trial included 26 dogs randomized to one of the three treatment groups (follow normal distribution):
1. P2O7
2. HMP
3. Control (standard feed)
the values are given:
Group 1=(P2O7) 2= (HMP) 3=(Kontrol)
ni 9 8 9
mean 0.7467 0.4375 1.0889
s^2 0.13655 0.08448 0.17854
question: Use Bartletts test to test if the variance are equal
If possible answer in R. If not by hand is also good.
Solutions
milcah answered 1 year agoRelated Solutions
A study is designed to investigate whether there is a difference in response to various treatments...
A study is designed to investigate whether there is a difference
in response to various treatments in patients with rheumatoid
arthritis. The outcome is patient’s self-reported effect of
treatment. The data are shown below. Are symptoms independent of
treatment? Conduct a ChiSquare test at a 5% level of significance.
1.df= (2 points) 2.Critical value: (2 points) 3.Computed statistic:
(2 points) 4.Based on comparing the computed statistics to the
critical value which of the following is (are) true? (4 points) a....
A study is designed to investigate whether there is a difference in response to various treatments...
A study is designed to investigate whether there is a difference
in response to various treatments in patients with Rheumatoid
arthritis. The outcome is the patient’s self-reported effect of
treatment. The data are shown below. Is there a significant
difference in effect of treatment? Run the test at a 5% level of
significance.
Symptoms
Worsened
No Effect
Symptoms Improved
Total
Treatment 1
22
14
14
50
Treatment 2
14
15
21
50
Treatment 3
9
12
29
50
The Chuckanut Formation is commonly found in Northern Washington. Suppose that the geologists decided to investigate...
The Chuckanut Formation is commonly found in Northern
Washington. Suppose that the geologists decided to investigate a
large ancient riverbed of the formation by examining each of 1000
small plots. After the investigation, they have found that only 2
plots contain fossil turtle shells from this large ancient
riverbed.
a) Suppose that these plots are independent (i.e., not spatially
correlated). Justify why it makes sense to assume a Poisson
distribution for modeling the number of plots that contain fossil
turtle...
What is the hydrophobic effect and how does it effect membrane formation? What is its’ influence...
What is the hydrophobic effect and how does it effect membrane
formation? What is its’ influence on protein folding?
Develop two functions in R, one that generates s^2 using the formation definition, and one that...
Develop two functions in R, one that generates s^2 using the
formation definition, and one that calculates s^2 based on the hand
calculation equation. Generate data from a normal distribution. Use
your functions to calculate s^2 for your generated data. Try this
for various variances so that your data become closer and closer to
the mean (less variance). What do you find, comment.
Develop two functions in R, one that generates s^2 using the formation definition, and one that...
Develop two functions in R, one that generates s^2 using the
formation definition, and one that calculates s^2 based on the hand
calculation equation. Generate data from a normal distribution. Use
your functions to calculate s^2 for your generated data. Try this
for various variances so that your data become closer and closer to
the mean (less variance). What do you find, comment.
A clinical psychologist is interested in knowing if different types of treatments have an effect on...
A clinical psychologist is interested in knowing if different
types of treatments have an effect on the
number of flashbacks per week experienced by Iraq War veterans. She
randomly selected a group of 24 veterans
with posttraumatic stress disorder (PTSD) from the local VA
hospital. Each person is randomly assigned to one of
three groups: Group 1 is a waiting list control group (no
treatment); Group 2 receives Eye Movement
Desensitization and Reprocessing (EMDR); and Group 3 gets
cognitive-behavioral therapy...
How can diet effect the formation of plaques in atherosclerosis? doc.
How can diet effect the formation of plaques in atherosclerosis?
doc.
You are designing an experiment to investigate the effect of odor on alertness. In this experiment,...
You are designing an experiment to investigate the effect of
odor on alertness. In this experiment, 10 subjects will experience
the experimental condition (smelling peppermint) and another 10
will be given the control condition (odorless). You know that age
significantly affects the sense of smell, with people over the age
of 60 showing a decreased ability to identify odors. A total of 20
subjects of all ages (18-80) have signed up for the experiment. How
would you assign them to...
An experiment was carried out to investigate the effect of species (factor A, with I =...
An experiment was carried out to investigate the effect of
species (factor A, with
I = 4)
and grade (factor B, with
J = 3)
on breaking strength of wood specimens. One observation was made
for each species—grade combination—resulting in SSA = 443.0, SSB =
424.6, and SSE = 125.4. Assume that an additive model is
appropriate.
(a)
Test
H0: α1 =
α2 = α3 =
α4 = 0
(no differences in true average strength due to species)
versus
Ha:...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- The main purpose of this individual assignment is to learn about Cultural Competence to increase professionalism...
- Please give full explanation. Assume that the program counter (PC) is set to 0x00000000. Describe how...
- What kind of network management protocols are available? What information can these protocols provide? Explain it...
- A firm with a 13% WACC is evaluating two projects for this year's capital budget. After-tax...
- The amount of water in a bottle is approximately normally distributed with a mean of 2.40...
- How to gather requirements and plan to identify unauthorized access attempts and block compromised systems from...
- 1) Suppose that a certain population of 100 individuals possesses two alleles (A and B) at...
ADVERTISEMENT