Question
In: Statistics and Probability
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 men. nothingless than
Solutions
Expert Solution
We have asked to construct a 90% confidence interval for the population standard deviation of BMI for men.
The random sample of 
men is given and
using that data we find the sample standard deviation of BMI for
men, and then using that we'll construct the 90% confidence
interval for the population standard deviation of BMI for men.
|
BMI for men |
 |
 |
| 30.9 | 3.23 | 10.4329 |
| 22.3 | -5.37 | 28.8369 |
| 29.9 | 2.23 | 4.9729 |
| 30.9 | 3.23 | 10.4329 |
| 27.2 | -0.47 | 0.2209 |
| 31.7 | 4.03 | 16.2409 |
| 26.5 | -1.17 | 1.3689 |
| 20.2 | -7.47 | 55.8009 |
| 26.6 | -1.07 | 1.1449 |
| 30.5 | 2.83 | 8.0089 |
|
|
sample standard deviation of mens BMI is-
Formula to calculate the confidence interval for standard
deviation 
is-
Critical value:
So, the 90% confidence interval for the population standard
deviation for mens BMI is calculated as (2.8504,
6.4296) Or 
orchestra answered 2 years agoRelated Solutions
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...
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...
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...
Medical researchers conducted a national random sample of the body mass index (BMI) of 654 women...
Medical researchers conducted a national random sample of the
body mass index (BMI) of 654 women aged 20 to 29 in the U.S. The
distribution of BMI is known to be right skewed. In this sample the
mean BMI is 26.8 with a standard deviation of 7.42. Are researchers
able to conclude that the mean BMI in the U.S. is less than 27?
Conduct a hypothesis test at the 5% level of significance using
StatCrunch (directions) or calculating T and...
We have the survey data on the body mass index (BMI) of 651 young women. The...
We have the survey data on the body mass index (BMI) of 651
young women. The mean BMI in the sample was x( with bar over
it)=26.3. We treated these data as an SRS from a Normally
distributed population with standard deviation σ=7.3.
Give confidence intervals for the mean BMI and the margins of
error for 90%, 95%, and 99% confidence
Conf.
level
Interval
margins of error
90%
___to___ ________
95%
___to____
_________
95%
____to____
__________
We have the survey data on the body mass index (BMI) of 659 young women. The...
We have the survey data on the body mass index (BMI) of 659
young women. The mean BMI in the sample was
x = 26.2. We treated these data as an SRS from a
Normally distributed population with standard deviation σ
= 8.1.
Give confidence intervals for the mean BMI and the margins of
error for 90%, 95%, and 99% confidence. (Round your answers to two
decimal places.)
confidence level interval margin of error
90% _____ to _____ _____
95%...
Discuss the process of calculating Body Mass Index (BMI).
Discuss the process of calculating Body Mass Index (BMI).
Suppose that Body Mass Index (BMI) for a population of 30-60-year-old men follows a Normal distribution...
Suppose that Body Mass Index (BMI) for a population of
30-60-year-old men follows a Normal distribution with mean 26, and
standard deviation 4. Q: Please calculate the range of BMI that 95%
of subjects fall within:
Suppose we know that the prevalence of asthma among American
children is 11%. Researchers conducted a study among 600 children
in Boston and found that 56 had asthma. Q:Suppose researchers
originally planed to enroll 1000 children, but they had to reduce
the sample size...
Design a modular program that calculates and displays a person's body mass index (BMI). The BMI...
Design a modular program that calculates and displays a person's
body mass index (BMI). The BMI is often used to determine whether a
person with a sedentary lifestyle is overweight or underweight for
his or her height. A person's BMI is calculated with the following
formula: BMI=Weight*703/Height^2. I need help making this to Java
to just calculate BMI.
Body mass index (BMI) is a reliable indicator of body fat for most children and teens....
Body mass index (BMI) is a reliable indicator of body fat for
most children and teens. BMI is calculated from a child’s weight
and height and is used as an easy-to-perform method of screening
for weight categories that may lead to health problems. For
children and teens, BMI is age- and sex-specific and is often
referred to as BMI-for-age.
The Centers for Disease Control and Prevention (CDC) reports
BMI-for-age growth charts for girls as well as boys to obtain a...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Do you agree that Social Loafing is similar to Theory X. Give an example to support...
- Computing Cost of Goods Sold and Ending Inventory. Bartov Corporation reports the following beginning inventory and...
- SQL FORMAT (11-13 are completed and correct) -- 11. what are the names of all students...
- You have been hired as a capital budgeting analyst by Advent Sports, a sporting goods firm...
- DESCRIBE WHAT HAPPENS WHEN WE BECOME CONSCIOUS OF SOMETHING. WHAT HAS TO HAPPEN FOR CONSCIOUS AWARENESS...
- 3) You are rolling a 12 sided die 8 times. a) What is the size for...
- explain the difference between quantitative and qualitative research strategies. Provide an example of a crime based...
ADVERTISEMENT