Question
In: Statistics and Probability
Ten different people take part in an exercise program. Their blood pressure is tested before and...
Ten different people take part in an exercise program. Their blood pressure is tested before and after the program. Use a 5% level of significance to determine whether the program helps reduce blood pressure.
|
Before |
135 |
145 |
126 |
138 |
150 |
131 |
147 |
160 |
140 |
137 |
|
After |
132 |
140 |
126 |
132 |
145 |
135 |
144 |
150 |
135 |
135 |
Ho:
H1:
Statistic:
Conclustion:
Solutions
orchestra answered 2 years agoRelated Solutions
The systolic blood pressure of 16 students was measured before a test. The blood pressure from...
The systolic blood pressure of 16 students was measured before a
test. The blood pressure from this sample averaged 165, with a
standard deviation of 40.
a) Compute the approximate 95% confidence interval for mean
systolic blood pressure, and make a sketch illustrating these
confidence intervals
b) If a mean blood pressure above 130 is considered “stressed”,
what do your calculations show regarding the probability that the
observed mean is above the “stressed” level.
3. Three different treatments for hypertension (high blood pressure) are being tested. A medical researcher takes...
3. Three different treatments for hypertension (high blood
pressure) are being tested. A medical researcher takes volunteers
and randomly assigns them into groups taking treatment A, B, and C.
The reduction in blood pressure is measured for each patient with
the following results:
> d patient treatment reduction 1 1 A 7.0 2 2 A 7.9 3 3 A 5.0
4 4 A 8.3 5 5 A 3.3 6 6 A 2.8 4 7 7 A 3.9 8 8 A...
Before any homeostatic mechanisms take place, explain what occurs initially to a patient’s blood pressure when...
Before any homeostatic mechanisms take place, explain what occurs
initially to a patient’s blood pressure when they lose a lot of
blood during surgery. Use arrows to designate increases or
decreases.
EDV minus ESV equals SV
SV multiplied by HR equals CO
CO multiplied by TPR equals BP
Dentists make many people nervous. To see whether such nervousness elevates blood pressure, the blood pressure...
Dentists make many people nervous. To see whether such
nervousness elevates blood pressure, the blood pressure and pulse
rates of 60 subjects were measured in a dental setting and in a
medical setting. For each subject, the difference (dental-setting
blood pressure minus medical-setting blood pressure) was
calculated. The analogous differences were also calculated for
pulse rates. Summary data are given below.
Mean
Difference
Standard
Deviation of
Differences
Systolic Blood Pressure
4.43
8.77
Pulse
(beats/min)
−1.30
8.84
(a)
Do the data...
Dentists make many people nervous. To see whether such nervousness elevates blood pressure, the blood pressure...
Dentists make many people nervous. To see whether such
nervousness elevates blood pressure, the blood pressure and pulse
rates of 60 subjects were measured in a dental setting and in a
medical setting. For each subject, the difference (dental-setting
blood pressure minus medical-setting blood pressure) was
calculated. The analogous differences were also calculated for
pulse rates. Summary data are given below.
Mean
Difference
Standard
Deviation of
Differences
Systolic Blood Pressure
4.49
8.77
Pulse
(beats/min)
−1.33
8.84
(a)
Do the data...
Ten different families are tested for the number of gallons of water a day they use...
Ten different families are tested for the number of gallons of
water a day they use before and after viewing a conservation video.
At the 0.05 significance level, test the claim that the mean is the
same before and after the viewing.
List the null and alternative hypothesis,
the critical value,
the test statistic with and
sd.
Draw the graph and label the test statistic, critical
value and rejection regions.
Reject or fail to reject?
State the conclusion
Before
33...
As exercise increases, systolic blood pressure increases, diastolic blood pressure stays constant or increases very minimally...
As exercise increases, systolic blood pressure increases,
diastolic blood pressure stays constant or increases very minimally
and heart rate increase at a high rate. What is the underlying
physiological reason for the response in blood pressure changes
seen during a dynamic portion of a lab?
A certain drug is tested for its effect on blood pressure. Seven male patients have their...
A certain drug is tested for its effect on blood pressure. Seven
male patients have their systolic blood pressure measured before
and after receiving the drug with the results shown below (in mm
Hg).
Patient
SBP before SBP after
1
120
125
2
124
126
3
130
138
4
118
117
5
140
143
6
128
128
7
140
146
a. (2) State, in prose, the study
hypothesis (two-tailed).
b. (2)...
To examine the effect of a drug on blood pressure, 10 diabetics before and after the...
To examine the effect of a drug on blood pressure, 10 diabetics before and after the blood
pressures are measured and the following results are obtained.
a) For this type of mass diabetics, what is the average difference between blood pressure before and after the drug?
You can tell?
b) Do you have an estimate of the difference between the mean and before blood pressure?
c) 90% confidence interval for the mean difference in blood pressure of the mass before...
Eight different families are tested for the number gallons of water a day they use before...
Eight different families are tested for the number gallons of
water a day they use before and after viewing a conservation video.
Information is given below. Do you believe that the conservation
video is helpful to save daily water usage? Explain your answer
using both confidence interval method and hypothesis test
method.
before
34
33
38
33
40
31
33
35
after
33
28
25
35
31
28
35
28
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