Question
In: Statistics and Probability
Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person....
Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person. The systolic readings (in mmHg) are listed below. Find the range, variance, and standard deviation for the given sample data. If the subject's blood pressure remains constant and the medical students correctly apply the same measurement technique, what should be the value of the standard deviation? 146 127 124 134 122 121
Range
Sample variance
sample standard deviation
mmHg (Round to the nearest tenth as needed.)
What should be the value of the standard deviation?
A.
Ideally, the standard deviation would be one because all the measurements should be the same.
B.
Ideally, the standard deviation would be zero because all the measurements should be the same.
C.
Ideally, the standard deviation would be one because this is the lowest standard deviation that can be achieved.
D.
There is no way to tell what the standard deviation should be.
Solutions
Expert Solution
The statistical software output for this problem is:
Summary statistics:
| Column | Range | Variance | Std. dev. |
|---|---|---|---|
| Data | 25 | 91.2 | 9.5498691 |
Hence,
Range = 25
Sample variance = 91.2
Sample standard deviation = 9.5
Ideally, the standard deviation would be zero because all the measurements should be the same.
Option B is correct.
orchestra answered 2 years agoRelated Solutions
Six different second-year medical students at Bellevue Hospital measured the blood pressure of the same person....
Six different second-year medical students at Bellevue Hospital
measured the blood pressure of the same person. The systolic
readings (in mmHg) are listed below. Find the range, variance,
and standard deviation for the given sample data. If the subject's
blood pressure remains constant and the medical students correctly
apply the same measurement technique, what should be the value of
the standard deviation? 120 134 133 143 138 136 Rangeequals
nothing mmHg Sample varianceequals nothing mmHgsquared (Round to
the nearest tenth...
Fourteen different second-year medical students at a hospital measured the blood pressure of the same person....
Fourteen different second-year medical students at a hospital
measured the blood pressure of the same person. The systolic
readings (mm Hg) are listed below. Use the given data to construct
a boxplot and identify the 5-number summary.
129 141 135 133 120 125 135 130 150 140 150 140 145 150
The 5-number summary is _,_,_,_, and _, all in mm Hg.
3) Five different second-year medical students took blood pressure measurements of the same patient and the...
3) Five different second-year medical students took blood
pressure measurements of the same patient
and the results are listed below. The goal of this research project
is to determine if the diastolic BP and
patients systolic BP are correlated. The following data are for
five BP readings.
Systolic Diastolic
138 84
135 88
122 81
130 86
140 91
a. Provide a scatterplot of the data below. Label and put
numbers along the axes.
b. Calculate and interpret the sample...
Fourteen different second-year medical students took blood pressure measurements of the same patient and the results...
Fourteen different second-year medical students took blood
pressure measurements of the same patient and the results are
listed below (data provided by Marc Triola, M.D.) Is there a
correlation between systolic and diastolic values?
Systolic
138 130 135 140 120 125 120 130 130 144 143 140 130 150
Diastolic
82 91 100 100 80 90 80 80 80 98 105 85 70 100
a. Hypothesis
b. Test Statistics
c. P-value
d. Find the r value
e. Conclusion
#2) Fourteen second year medical students took blood pressure measurements of the same patient and...
#2) Fourteen second year
medical students took blood pressure measurements of the same
patient and the
results are listed below.
Systolic | 138
130 135 140
120 125
120 130
130 144
143 140
130 150
Diastolic | 82
91 100
100 80
90
80
80
80 98
105
85
70 100
Calculate the correlation coefficient.
Is there a significant correlation between systolic and
diastolic blood pressure?
Conduct an appropriate test to justify your answer (use a =
.05)....
The results of the blood pressure measurements taken of the same patient by fourteen different second-year medical students are listed in the table below.
The results of the blood pressure measurements taken of the same patient by fourteen different second-year medical students are listed in the table below.
Systolic Diastolic
138 82
130 91
135 100
140 100
120 80
125 90
120 80
130 80
130 80
144 98
143 105
140 85
130 70
150 100
a. Use your graphing calculator, construct a scatter-plot of the data. Sketch...
The results of the blood pressure measurements taken of the same patient by fourteen different second-year...
The results of the blood pressure measurements taken of the same
patient by fourteen different second-year medical students are
listed in the table below.
Systolic Diastolic
138
82
130
91
135
100
140
100
120
80
125
90
120
80
130
80
130
80
144
98
143
105
140
85
130
70
150
100
a. Use a 5% level of significance to test
whether there is a...
The following sample data were obtained from different second-year medical students who took blood pressure measurements...
The following sample data were obtained from different
second-year medical students who took blood pressure measurements
of the same person. Conduct a formal hypothesis test to test for a
linear correlation between the systolic and diastolic readings. Use
a 0.05 significance level.
Systolic
138
130
135
140
120
Diastolic
82
91
100
100
80
Does there appear to be a linear correlation between the
systolic and diastolic readings?
Yes or No?
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.
The blood pressure measurements of a single patient were taken by twelve different medical students and...
The blood pressure measurements of a single patient were taken
by twelve different medical students and the results are listed
below. Construct a scatterplot, find the value of the linear
correlation coefficient r, and find the P-value using
alphaαequals=0.050.05.
Is there sufficient evidence to conclude that there is a linear
correlation between systolic measurements and diastolic
measurements?
systolic (x)
137137
133133
139139
120120
126126
121121
128128
128128
129129
143143
143143
138138
diastolic (y)
9595
9393
101101
8585
8989
8080
8181...
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