Question
In: Statistics and Probability
Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the...
Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the maximum pressure taken when the heart is contracting, and the diastolic pressure, which is the minimum pressure taken at the beginning of the heartbeat. Blood pressures were measured, in millimeters of mercury, for a sample of adults. The following table presents the results.
Systolic '
134
113
119
130
133
107
108
157
Diastolic
87
77
69
76
91
71
69
103
Use the TI-84 calculator. Construct a 99% confidence interval for the slope. Round the answers to at least four decimal places.
Solutions
Expert Solution
| SSE =Syy-(Sxy)2/Sxx= | 172.073 | |
| s2 =SSE/(n-2)= | 28.6788 | |
| std error σ = | =se =√s2= | 5.3553 |
| std error of slope =se(β1) =s/√Sxx= | 0.1201 | |
| for 99 % CI value of t= | 3.707 | (from excel:tinv(0.01,6) | |
| margin of error E=t*std error = | 0.4454 | ||
| lower bound=b1+E= | 0.2177 | ||
| Upper bound=b1+E= | 1.1086 | ||
99% confidence interval =( 0.2177 <ß1< 1.1086)
orchestra answered 1 year agoRelated Solutions
Blood pressure: A blood pressure measurement consists of two numbers: the systolic pressure, which is the...
Blood pressure: A blood pressure measurement
consists of two numbers: the systolic pressure, which is the
maximum pressure taken when the heart is contracting, and the
diastolic pressure, which is the minimum pressure taken at the
beginning of the heartbeat. Blood pressures were measured, in
millimeters, for a sample of 7 adults. The following table presents
the results. The least-squares regression line
=y=+b0b1x+24.83840.4499x, =se7.161065, =Σ−xx2407.43, and x=120.71
are known for this data.
Systolic
Diastolic
112
75
118
88
130
76...
NO SOFTWARE OR EXCEL Blood pressure measurement consists of two numbers: the systolic pressure, which is...
NO SOFTWARE OR EXCEL
Blood pressure measurement consists of two numbers: the systolic
pressure, which is the maximum pressure taken when the heart is
contracting, and the diastolic pressure, which is the minimum
pressure taken at the beginning of the heartbeat. Blood pressure
values were measured for a sample of 8 adults; the data are given
below.
SYSTOLIC
DIASTOLIC
134
87
115
83
113
77
123
77
119
69
118
88
130
76
116
70
h) Perform a one-tail hypothesis...
1. The following table gives the systolic blood pressure and age of patients. Systolic Blood Pressure...
1. The following table gives the systolic blood pressure and age
of patients.
Systolic Blood Pressure
Age
131
34
132
36
122
30
119
32
123
26
115
23
137
37
a) Determine an r value for this data and classify the value as
weak, moderate, or strong.
b) Based on your calculated r value, what can you say about the
slope of the regression line?
c) Determine the model equation. This is also called the
regression line or the...
Systolic blood pressure is the amount of pressure that blood exerts on blood vessels while the...
Systolic blood pressure is the amount of pressure that blood
exerts on blood vessels while the heart is beating. The mean
systolic blood pressure for people in the United States is reported
to be 122 millimeters of mercury (mmHg) with a standard deviation
of 15 mmHg.
The wellness department of a large corporation is investigating
whether the mean systolic blood pressure of its employees is
greater than the reported national mean. A random sample of 50
employees will be selected,...
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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