Question
In: Statistics and Probability
A researcher studied age and systolic blood pressure of 6 randomly selected subjects. The data are...
A researcher studied age and systolic blood pressure of 6 randomly selected subjects. The data are shown in the table.
Subject /Age /Pressure
A 43 120
B 48 128
C 56 135
D 61 141
E 67 143
F 70 152
Test the significance of the correlation between age and systolic blood pressure. Use a significance level of 0.05.
Step1) Identify the null and alternative hypotheses symbolically. H0: H1:
Step 2) Find the p – value and make the decision to reject or not reject the null hypothesis.
Step 3) Choose the correct conclusion from the following: There is no correlation between age and systolic blood pressure. There is a correlation between age and systolic blood pressure.
Step 4) Find the equation of the regression line for the data.
Step 5) Using the equation of the regression line found in Step 4), predict the blood pressure for a person who is 50 years old.
Solutions
orchestra answered 2 years agoRelated Solutions
The weight and systolic blood pressure (BP) of 26 randomly selected males in the age group...
The weight and systolic blood pressure (BP) of 26
randomly selected males in the age group 25-30 are shown in the SAS
code. Assume that for any fixed value of weight, BP is normally
distributed.
Number of
Observations Read
27
Number of
Observations Used
26
Number of
Observations with Missing Values
1
Analysis of
Variance
Source
DF
Sum of
Squares
Mean
Square
F
Value
Pr >
F
Model
1
2693.58122
2693.58122
35.74
<.0001
Error
24
1808.57262
75.35719
Corrected
Total
25...
Researcher recorded the following data to study the effects of age (x) on systolic blood pressure...
Researcher recorded the following data to study the effects of
age (x) on systolic blood pressure (y) in men over the age of 50.
Using the data below, calculate the 95% prediction interval for the
systolic blood pressure of a 60-year old man. Estimated regression
line is Y = 84.250 + 0.991x.
Age
67
54
78
66
80
57
59
71
60
62
53
Systolic BP (mmHg)
135
145
167
129
163
146
152
168
142
151
129
We have age and systolic blood pressure (SBP) of 10 randomly chosen people. Using this data,...
We have age and systolic blood pressure (SBP) of 10 randomly
chosen people. Using this data, we would like to create a model to
predict systolic blood pressure from age.
Age
SBP
53
137
50
132
54
149
48
132
43
120
43
126
63
161
63
170
62
152
65
164
Write out the model with the beta coefficients.
(6pts) Put this data into SPSS, and find the parameter
estimates. Write out the prediction equation. Interpret the
prediction equation....
We have age and systolic blood pressure (SBP) of 10 randomly chosen people. Using this data,...
We have age and systolic blood pressure (SBP) of 10 randomly
chosen people. Using this data, we would like to create a model to
predict systolic blood pressure from age.
Age
SBP
53
137
50
132
54
149
48
132
43
120
43
126
63
161
63
170
62
152
65
164
Give a 95% CI around the predicted slope coefficient and
interpret.
Using the prediction equation, what is the predicted systolic
blood pressure for a
44 year old?
61...
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...
Question 6 A medical researcher is studying the effects of a drug on blood pressure. Subjects...
Question 6
A medical researcher is studying the effects of a drug on blood
pressure. Subjects in the study have their blood pressure taken at
the beginning of the study. After being on the medication for 4
weeks, their blood pressure is taken again. The change in blood
pressure is recorded and used in doing the hypothesis test.
Change: Final Blood Pressure - Initial Blood Pressure
The researcher wants to know if there is evidence that the drug
increases blood...
A medical researcher is investigating the effect of drinking coffee on systolic blood pressure. The researcher...
A medical researcher is investigating the effect of drinking
coffee on systolic blood pressure. The researcher assumes the
average systolic blood pressure is 120 mmHg. For a random sample of
200 patients, the researcher takes two measurements of systolic
blood pressure. The first systolic blood pressure measurement is
taken during a week when the patients drink no coffee, and the
second systolic blood pressure measurement is taken during a week
when the patients drink at least two cups of coffee....
A medical researcher is studying the effects of a drug on blood pressure. Subjects in the...
A medical researcher is studying the effects of a drug on blood
pressure. Subjects in the study have their blood pressure taken at
the beginning of the study. After being on the medication for 4
weeks, their blood pressure is taken again. The change in blood
pressure is recorded and used in doing the hypothesis test. Change:
Final Blood Pressure - Initial Blood Pressure The researcher wants
to know if there is evidence that the drug reduces blood pressure.
At...
A medical researcher is studying the effects of a drug on blood pressure. Subjects in the...
A medical researcher is studying the effects of a drug on blood
pressure. Subjects in the study have their blood pressure taken at
the beginning of the study. After being on the medication for 4
weeks, their blood pressure is taken again. The change in blood
pressure is recorded and used in doing the hypothesis test.
Change: Final Blood Pressure - Initial Blood Pressure
The researcher wants to know if there is evidence that the drug
affects blood pressure. At...
A medical researcher is studying the effects of a drug on blood pressure. Subjects in the...
A medical researcher is studying the effects of a drug on blood
pressure. Subjects in the study have their blood pressure taken at
the beginning of the study. After being on the medication for 4
weeks, their blood pressure is taken again. The change in blood
pressure is recorded and used in doing the hypothesis test. Change:
Final Blood Pressure - Initial Blood Pressure The researcher wants
to know if there is evidence that the drug increases blood
pressure. At...
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