Question
In: Statistics and Probability
To determine whether high blood pressure affected whether a person had a stroke, a sample of...
To determine whether high blood pressure affected whether a person had a stroke, a sample of 121 people who had had strokes are examined. In the sample, 40% had high blood pressure. If we were to test the hypothesis that at least 33% of the people who have had strokes have had high blood pressure (using the 10% level of signficance) what is the critical value? (please round your answer to 2 decimal places)
Solutions
orchestra answered 1 year agoRelated Solutions
what is high blood pressure? who is affected? what can we do about high blood pressure?...
what is high blood pressure? who is affected? what can
we do about high blood pressure? what can be done to have a healthy
life and can it be cured?
change from high blood pressure to diabetes
Summarize how a blood pressure cuff allows a person to determine blood pressure.
Summarize how a blood pressure cuff allows a person to
determine blood pressure.
Frank- has high blood pressure. Blood pressure is affected by heart rate (higher heart rate increases...
Frank- has high blood pressure. Blood pressure is affected by
heart rate (higher heart rate increases pressure), vasomotor tone
(more vasoconstriction increases pressure), and blood volume (we
will not consider this factor in this question)
Of the pharmaceutical (medication/drug) types listed below,
which is/are most likely to help Frank reduce his blood pressure?
For each, EXPLAIN HOW the drug would either help or harm Frank.
A drug that blocks beta-1 receptors
A drug that activates beta-2 receptors
A drug that...
TWO MEANS A researcher wishes to determine whether people with high blood pressure can reduce their...
TWO MEANS
A researcher wishes to determine whether people with high blood
pressure can reduce their blood pressure by following a particular
diet. Use the sample data below to test the claim that those who
followed the diet have a lower mean blood pressure than those who
did not followed the diet.
Followed the diet: n1 = 85, x ̅_1 = 189.1 s1 = 38.7 Did not
follow the diet: n2 = 75, x ̅_2 = 203.7 s2 = 39.2...
The blood pressure of a person changes throughout the day. Suppose the systolic blood pressure of...
The blood pressure of a person changes throughout the day.
Suppose the systolic blood pressure of a person is measured 24
times over several days and the standard deviation of these
measurements for the person is known to be σ=9 σ = 9 mmHg. Let μ μ
be the true average blood pressure for that person and let x¯=96 x
¯ = 96 be the average of the 24 measurements. (a) Find a two-sided
91% confidence interval for μ.μ. One...
The blood pressure of a person changes throughout the day. Suppose the systolic blood pressure of...
The blood pressure of a person changes throughout the day.
Suppose the systolic blood pressure of a person is measured 16
times over several days and the standard deviation of these
measurements for the person is known to be σ=7.9 mmHg. Let μ be the
true average blood pressure for that person and let x¯=127 be the
average of the 16 measurements.
(a) Find a two-sided 94% confidence interval for μ. One can be
94% confident that the true average...
The blood pressure of a person changes throughout the day. Suppose the systolic blood pressure of...
The blood pressure of a person changes throughout the day.
Suppose the systolic blood pressure of a person is measured 16
times over several days and the standard deviation of these
measurements for the person is known to be σ=7.9 mmHg. Let μ be the
true average blood pressure for that person and let x¯=127 be the
average of the 16 measurements.
(a) Find a two-sided 94% confidence interval for μ. One can be
94% confident that the true average...
A researcher wishes to determine whether the blood pressure of vegetarians is, on average, lower than...
A researcher wishes to determine whether the blood pressure of
vegetarians is, on average, lower than the blood pressure of
nonvegetarians. Independent simple random samples of 85 vegetarians
and 75 nonvegetarians yielded the following sample statistics for
systolic blood pressure:
Vegetarians
n1= 85
= 124.1 mmHg
s1 = 38.7 mmHg
Nonvegetarians
n2 = 75
= 138.7 mmHg
s2 = 39.2 mmHg
Use a significance level of 0.01 and P-value method to test the
claim that the mean systolic blood pressure...
The efficacy of salt-free diets for controlling high blood pressure is studied for a sample of...
The efficacy of salt-free diets for controlling high blood
pressure is studied for a sample of 8 patients.
Each has their diastolic blood pressure measured before going on
the diet and after. The data appear below:
Patient
1
2
3
4
5
6
7
8
Sample 1 - Before
93
106
90
93
102
95
88
110
Sample 2 - After
92
102
89
92
101
96
87
105
Assume the differences in blood pressure fit a normal
distribution.
Use...
We plan to investigate whether blood pressure is affected by eating lasagna lunch every day. Describe...
We plan to investigate whether blood pressure is affected by
eating lasagna
lunch every day. Describe how to submit such an investigation to
get pairwise independence observations.
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