Question
In: Advanced Math
2. A study was conducted of 90 adult male patients following a new treatment for congestive...
2. A study was conducted of 90 adult male patients following a
new treatment for congestive heart failure. One of the variables
measured on the patients was the increase in exercise capacity (in
minutes) over a 4-week treatment period. The previous treatment
regime had produced an av- erage increase of 2 minutes. The
researchers wanted to evaluate whether the new treatment had
increased the value of μ in comparison to the previous treatment.
The data yielded y = 2.35 minutes and s = 1.05.
(a) What type of confidence interval are you going to perform
for this data? Justify your answer.
(b) Calculate and interpret a 99% CI for the true mean
increase in exercise capacity (in min- utes).
(c) Using your interval, does the new treatment increase the
exercise capacity when compared to the mean of the previous
treatment?
Solutions
Expert Solution
SOLUTION:
Given That data A study was conducted of 90 adult male patients following a new treatment for congestive heart failure. One of the variables measured on the patients was the increase in exercise capacity (in minutes) over a 4-week treatment period. The previous treatment regime had produced an av- erage increase of 2 minutes. The researchers wanted to evaluate whether the new treatment had increased the value of μ in comparison to the previous treatment. The data yielded y = 2.35 minutes and s = 1.05.
So
Colby Messinger answered 2 years agoRelated Solutions
Treatment for depression: Researchers conducted a study of 18 patients whose depression had not responded to...
Treatment for depression: Researchers conducted a study of 18
patients whose depression had not responded to treatment (Zarate,
2006). Half received one intravenous dose of ketamine, hypothesized
quick fix for depression; half received one intravenous dose of
placebo. Far more of the patients who received ketamine improved,
as measured by the Hamilton Depression Rating Scale, usually in
less than 2 hours, than patients on placebo.
a.What is the population of interest, and what is the sample in
the study?
b....
A study is being conducted to explore the differences in blood pressure among male patients between...
A study is being
conducted to explore the differences in blood pressure among
male
patients between the ages of 40 and 50
who
are
enrolled in an exercise program versus male patients
between the ages of 40 and 50 who are not enrolled in an exercise
program to determine if there are changes in blood pressure
readings after a sixty (60) day period.
1. Based on the
information given, what is the researchquestion?
2. What is the role of
evidence-based...
A study was done on 40 female patients following a new treatment for cardio-vascular disease (CVD). ...
A study was done on 40 female patients following a new treatment
for cardio-vascular disease (CVD). Doctors measured the
increase in exercise capacity (in minutes) over a 6-week period.
The conventional treatment had produced an average increase of 2
minutes. Researchers wish to claim that the new treatment will
increase the mean exercise capacity more than the conventional
treatment. The data yielded x=2.3 and S =1.2
Conduct a 5-step test of hypotheses to test the researchers’
claim, use a =...
A study of 90 workers following a new pre-work stretching exercise program was conducted. One of...
A study of 90 workers following a new pre-work
stretching exercise program was conducted. One of the variables
measured over the 4-week study was the increase in number of
minutes worked in an hour. A previous program had produced an
average increase of µ = 2 mins per hour. The company wants to
evaluate whether the new program had increased µ in
comparison
with the previous program. The study data yielded x̅= 2.17 and s =
1.05.
a. At the...
Case Study 2 Mr. P is a 76-year-old male with cardiomyopathy and congestive heart failure who...
Case Study 2 Mr. P is a 76-year-old male with cardiomyopathy and
congestive heart failure who has been hospitalized frequently to
treat CHF symptoms. He has difficulty maintaining diet restrictions
and managing his polypharmacy. He has 4+ pitting edema, moist
crackles throughout lung fields, and labored breathing. He has no
family other than his wife, who verbalizes sadness over his
declining health and over her inability to get out of the house.
She is overwhelmed with the stack of medical...
A research study was conducted to examine the clinical efficacy of a new antidepressant. Depressed patients...
A research study was conducted to examine the clinical efficacy
of a new antidepressant. Depressed patients were randomly assigned
to one of three groups: a placebo group, a group that received a
low dose of the drug, and a group that received a moderate dose of
the drug. After four weeks of treatment, the patients completed the
Beck Depression Inventory. The higher the score, the more depressed
the patient. The data are presented below
placebo low dose moderate dose
38...
A research study was conducted to examine the clinical efficacy of a new antidepressant. Depressed patients...
A research study was conducted to examine the clinical efficacy
of a new antidepressant. Depressed patients were randomly assigned
to one of three groups: a placebo group, a group that received a
low dose of the drug, and a group that received a moderate dose of
the drug. After four weeks of treatment, the patients completed the
Beck Depression Inventory. The higher the score, the more depressed
the patient. The data are presented below. Compute the appropriate
test.
Placebo
Low...
A psychopharmacologist conducted a study on the effects of the drug lithium for the treatment of...
A psychopharmacologist conducted a study on the effects of the
drug lithium for the treatment of depression. Twenty-seven patients
were chosen whose principal problem was depression. There were 3
groups: Placebo, Low Dose (50mg) and High Dose (200mg). There were
9 patients in each group. At the end of 30 days, the patients were
evaluated for their level of depression, with higher scores
indicating higher levels of depression.
Fill in the blanks with the appropriate numbers, setting
alpha=.05.
Source ...
Can male patients suffer from breast cancer? Is the treatment the same as in the female...
Can male patients suffer from breast cancer? Is the treatment
the same as in the female patients? Discuss your thoughts on the
possible emotional reactions between male vs female patients?
230/250 word discussion
Problem 2 A study was conducted to see how long Dr. Kennedy’s patients had to wait...
Problem 2
A study was conducted to see how long Dr. Kennedy’s patients had to
wait before their appointment. A random sample of 30 patients
showed the average waiting time was 20 minutes with a standard
deviation of 16 minutes.
(a) Construct a 99% confidence interval for µ, the true mean waiting
time and interpret your results.
(b) Suppose that Dr. Kennedy worker claims that the average waiting
time at his hospital is 20 minutes. Based on the interval above,...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Compare the MOSFET, JFET , and BJT and identify the reasons these devices behave differently. What...
- How would you use SAS Enterprise Miner to create a neural network model of your example?
- Explain the use of neural networking modeling in predictive analytics.
- Current Market Mix of Netflix, as detail as possible, please.
- This is all one question, thank you so much in advance! You must evaluate a proposal...
- X Company is considering the purchase of a new processor that costs $200,000. Shipping and setup...
- There are a large number of tasks involved in information technology and programming, and many of...
ADVERTISEMENT