Question
In: Math
1. A clinician claims that, on average, the blood pressure of hypertensive patients is 150. A...
1. A clinician claims that, on average, the blood pressure of hypertensive patients is 150. A particular doctor believes the amount is more than 150. Then he selected a random sample of 100 patients and found that the sample have average of 155 with standard deviation of 10. Conduct the test at the 0.05 of significance. a) Hypotheses HO: vs. HA a) Test statistic b) P-value c) Conclusion d) What is the power of the test conditions to identify a significant difference if the population mean was actually 152 at α=0.05 (two sided)? e) How large a sample is needed for a one-sample z test with 80% power and α = 0.05 (two-tailed) when σ = 10?
Solutions
Expert Solution
1)
a) Test statistic =5.00
b) p value =0.0000
c) Reject Ho and conclude that the amount is more than 150.
d)
e)
milcah answered 1 year agoRelated Solutions
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experiment was conducted separately for the 36 patients who had
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as the researcher suspected that results may differ for the two
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1. The following table gives the systolic blood pressure and age of patients. Systolic Blood Pressure...
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Systolic Blood Pressure
Age
131
34
132
36
122
30
119
32
123
26
115
23
137
37
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Below are the ages of six patients with blood pressure problems. Age, x Blood Pressure, y...
Below are the ages of six patients with blood pressure
problems.
Age, x
Blood Pressure, y
43
128
48
120
56
135
61
143
67
141
70
152
Use this data to determine if there is a correlation between the
age and blood pressure using the significance level of
α=0.05.
What is the p-value?
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces
systolic blood pressure. The systolic blood pressure (in
millimeters of mercury) for nine patients before taking the new
drug and 2 hours after taking the drug are shown in the table
below. Is there enough evidence to support the company's claim? Let
d = (blood pressure before taking new drug) − (blood pressure after
taking new drug). Use a significance level of α = 0.05 for the
test. Assume that the...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces
systolic blood pressure. The systolic blood pressure (in
millimeters of mercury) for nine patients before taking the new
drug and 2 hours after taking the drug are shown in the table
below. Using this data, find the 99% confidence interval for the
true difference in blood pressure for each patient after taking the
new drug. Assume that the blood pressures are normally distributed
for the population of patients both before and...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces
systolic blood pressure. The systolic blood pressure (in
millimeters of mercury) for nine patients before taking the new
drug and 2 hours after taking the drug are shown in the table
below. Using this data, find the 99% confidence interval for the
true difference in blood pressure for each patient after taking the
new drug. Assume that the blood pressures are normally distributed
for the population of patients both before and...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces
systolic blood pressure. The systolic blood pressure (in
millimeters of mercury) for nine patients before taking the new
drug and 22 hours after taking the drug are shown in the table
below. Is there enough evidence to support the company's claim?
Let d=(blood pressure before taking new drug)−(blood pressure
after taking new drug). Use a significance level of α=0.01 for the
test. Assume that the systolic blood pressure levels are normally...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces
systolic blood pressure. The systolic blood pressure (in
millimeters of mercury) for nine patients before taking the new
drug and 2 hours after taking the drug are shown in the table
below. Is there enough evidence to support the company's claim?
Let d=(blood pressure before taking new drug)−(blood pressure
after taking new drug). Use a significance level of α=0.01 for the
test. Assume that the systolic blood pressure levels are normally...
A pharmaceutical company claims that its new drug reduces systolic blood pressure. The systolic blood pressure...
A pharmaceutical company claims that its new drug reduces
systolic blood pressure. The systolic blood pressure (in
millimeters of mercury) for nine patients before taking the new
drug and 2 hours after taking the drug shown in the table below.
Using this data, find the 95 % confidence interval for the true
difference in blood pressure for each patient after taking the new
drug. Assume that the blood pressures are normally distributed for
the population of patients both before and...
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