Question
In: Statistics and Probability
I claim that systolic blood pressure (SYS) of men is correlated with the body mass index...
I claim that systolic blood pressure (SYS) of men is correlated with the body mass index (BMI) of men. The data below is from a randomly selected sample of 10 men.
|
BMI |
SYS |
|
23.8 |
125 |
|
23.2 |
107 |
|
24.6 |
126 |
|
26.2 |
110 |
|
23.5 |
110 |
|
24.5 |
107 |
|
21.5 |
113 |
|
31.4 |
126 |
|
26.4 |
137 |
|
22.7 |
110 |
- What is the correlation coefficient for this data?
- Is the correlation coefficient statistically significant? Why or why not?
Solutions
orchestra answered 3 years agoRelated Solutions
We claim that the body mass index (BMI) for men is statistically the same as the...
We claim that the body mass index (BMI) for men is statistically
the same as the BMI for women. Data from a random sample of 40 men
and 40 women is presented below:
BMI-M
BMI-F
Mean
25.9975
Mean
25.74
Standard Error
0.542448
Standard Error
0.974862
Median
26.2
Median
23.9
Mode
23.8
Mode
19.6
Standard Deviation
3.430742
Standard Deviation
6.16557
Sample Variance
11.76999
Sample Variance
38.01426
Kurtosis
-0.13645
Kurtosis
1.517743
Skewness
0.356785
Skewness
1.189501
Range
13.6
Range
27.2
Minimum
19.6
Minimum...
The body mass index (BMI) for a sample of men and a sample of women are...
The body mass index (BMI) for a sample of men and a sample of
women are given below. Assume the samples are simple random samples
obtained from populations with normal distributions. Men 30.930.9
22.322.3 29.929.9 30.930.9 27.227.2 31.731.7 26.526.5 20.220.2
26.626.6 30.530.5 Women nbspWomen 18.218.2 20.720.7 22.222.2
28.428.4 17.117.1 20.320.3 23.923.9 31.831.8 20.820.8 20.720.7
LOADING... Click the icon to view the table of Chi-Square critical
values. a. Construct aa 9090% confidence interval estimate of the
standard deviation of BMIs for...
The body mass index for a sample of men and a sample of women are given...
The body mass index for a sample of men and a sample of women
are given below. assume the samples are simple random samples
obtained form populations with normal distributions.
Men: 24.9, 28.4, 23.2, 32.8, 25.3, 32.9, 28.1, 28.6, 32.9,
26.4
Women: 19.6, 23.7, 18.2, 34.5, 19.3, 24.3, 18.8, 33.8, 18.7,
24.1
A. construct a 90% confidence interval estimate of the standard
deviation of BMIs for men
_ < σmen < _
B. construct a 99% confidence interval estimate of...
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...
The data file contains the Body Mass Index (BMI) for a sample of men and a...
The data file contains the Body Mass Index (BMI) for a sample of
men and a sample of women. Two of the columns, OW_male and
OW_female code the BMI values as: 0 - if BMI ≤ 25.4 (these are
considered “not overweight”); 1 - if BMI >= 25.5 (these are
considered “overweight”). (a) Test whether there is sufficient
evidence to show that the proportion of overweight males
(proportion of males who are overweight) is different than the
proportion of overweight...
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...
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