Question
In: Statistics and Probability
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV sleep these patients get in a 24-hour period. Number of minutes spent in Stage IV sleep is recorded for 61 patients. The mean stage IV sleep over a 24 hour period of time for these 61 patients was 48 minutes with a standard deviation of 14 minutes.
(a) Compute 95% confidence interval for mean stage IV sleep. Interpret this confidence interval.
(b) It has been believed that individuals suffering from Alzheimer's Disease may spend less time per night in the deeper stages of sleep. Test the hypothesis at 5% significance level if the true mean stage IV sleep of Alzheimer patients is less than 50 minutes.
- Provide the hypothesis statement
- Calculate the test statistic value
- Determine the probability value
(c) Could the confidence interval in part (a) be used to test the hypothesis in part (b)? Why or why not? (1 mark)
Solutions
orchestra answered 2 years agoRelated Solutions
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of Alzheimer's patients is tested to assess the amount
of time in stage IV sleep these patients get in a 24-hour period.
Number of minutes spent in Stage IV sleep is recorded for 61
patients. The mean stage IV sleep over a 24 hour period of time for
these 61 patients was 48 minutes with a standard deviation of 14
minutes.
(a) Compute 95% confidence interval for mean stage IV sleep.
Interpret this confidence interval.
(b) It has...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of Alzheimer's patients is tested to assess the amount
of time in stage IV sleep these patients get in a 24-hour period.
Number of minutes spent in Stage IV sleep is recorded for 61
patients. The mean stage IV sleep over a 24 hour period of time for
these 61 patients was 48 minutes with a standard deviation of 14
minutes. (a) Compute 90% confidence interval for mean stage IV
sleep. Interpret this confidence interval. (b) It has...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of
Alzheimer's patients is tested to assess the amount of time in
stage IV sleep these patients get in a 24-hour period. Number of
minutes spent in Stage IV sleep is recorded for 61 patients. The
mean stage IV sleep over a 24 hour period of time for these 61
patients was 48 minutes with a standard deviation of 14
minutes.
(a) Compute 90%
confidence interval for mean stage IV sleep. Interpret this
confidence interval.
(b) It has...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of Alzheimer's patients is tested to assess the
amount of time in stage IV sleep these patients get in a 24-hour
period. Number of minutes spent in Stage IV sleep is recorded for
61 patients. The mean stage IV sleep over a 24 hour period of time
for these 61 patients was 48 minutes with a standard deviation of
14 minutes.
(a) Compute 95% confidence
interval for mean stage IV sleep. Interpret this confidence
interval.
(b) It has been...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of Alzheimer's patients is tested to assess the
amount of time in stage IV sleep these patients get in a 24-hour
period. Number of minutes spent in Stage IV sleep is recorded for
61 patients. The mean stage IV sleep over a 24 hour period of time
for these 61 patients was 48 minutes with a standard deviation of
14 minutes.
(a) Compute
95% confidence interval for mean stage IV sleep. Interpret this
confidence interval.
(b) It has been...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV...
A sample of Alzheimer's
patients is tested to assess the amount of time in stage IV sleep
these patients get in a 24-hour period. Number of minutes spent in
Stage IV sleep is recorded for 61 patients. The mean stage IV sleep
over a 24 hour period of time for these 61 patients was 48 minutes
with a standard deviation of 14 minutes.
(a) Compute
95% confidence interval for mean stage IV sleep. Interpret this
confidence interval.
(b) It has been...
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV sleep these patients get in a 24-hour period.
A sample of Alzheimer's patients is tested to assess the amount of time in stage IV sleep these patients get in a 24-hour period. Number of minutes spent in Stage IV sleep is recorded for 61 patients. The mean stage IV sleep over a 24 hour period of time for these 61 patients was 48 minutes with a standard deviation of 14 minutes.
(a) Compute 95% confidence interval for mean stage IV sleep. Interpret this confidence interval.
(b) It has been...
A study was performed among patients with progressive chronic kidney disease to assess the optimal time...
A study was performed among patients with progressive chronic
kidney disease to assess the optimal time for the initiation of
dialysis (Cooper et al. [22]). Patients were randomized to
either
an early start group, where dialysis was
initiated when their estimated glomerular filtration rate (GFR) was
between 10.0 and 15.0 mL per minute per 1.73 m2 of body surface
area or
a late start group, where dialysis was
initiated when their GFR was 5.0 to 7.0 mL per minute per...
I am trying to isolate the proteins found in the blood of Alzheimer's patients with the...
I am trying to isolate the proteins found in the blood of
Alzheimer's patients with the hope of finding a biomarker that can
potentially indicate the early onset of the disease and was
wondering how I could do so? I know centrifugation is an option but
how would I go about doing it specifically?
-my end goal is to simply isolate the proteins from the blood
samples in order to run ITRAQ analysis on them and MS analysis
after
In a hospital there are 9 male patients and 6 female patients and tested positive for...
In a hospital there are 9 male patients and 6 female patients
and tested positive for coronavirus and they need ventilatos.But in
hospital there are only 5 ventilators available. We selects 5
patients at random for ventilators.
1) If M represents the numbers of male patients and F represents
the numbers of female patients then find the joint PMF of M and F.
Write the matrix form of joint pmf.
2) PM|F(m|f=2)?
3) Prove the following relation, V ar(M|F) =...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Draw a DFA for the following ( ∑ = {0,1}): Set of all strings with.
- In the article from Forbes notes that the goal of a leader is not to clone...
- Many people keep time using a 24 hour clock (11 is 11am and 23 is 11pm,...
- UNIX ONLY -- DIFFICULT LAB ASSIGNMENT This is an extremely difficult subject for me. Could you...
- Do you know why your credit card can be refused even though you are profitable?
- The Following Java expression: S/10 * 10 + 10 – S = C Show that this...
- Year Cash Flow 0 −$9,700 1 5,800 2 2,500 3 3,400 &nb
ADVERTISEMENT