Question
In: Statistics and Probability
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data set, we obtain these sample statistics: n=45 and x over bar=144.44 lb. Research from other sources suggests that the population of weights of women has a standard deviation given by sigma=30.15 lb.
The best point estimate is ____lb
The 95% confidence interval estimate is ___lb<μ<___lb
Solutions
Expert Solution
Solution :
Given that,
Point estimate = sample mean = 
= 144.44 lb
population standard deviation = 
= 30.15 lb
Sample size = n = 45
Z
/2
= 1.96
Margin of error = E = Z/2*
(
/
= 1.96 * (30.15 /
Margin of error = E = 8.81
At 95% confidence interval estimate of the population mean is,
- E < 
<
+ E
144.44 - 8.81 <
< 144.44 + 8.81
135.63 <
< 153.25
The 95% confidence interval estimate is 135.63 lb < μ < 153.25 lb
orchestra answered 2 years agoRelated Solutions
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data
set, we obtain these sample statistics: the sample size is 40 and
the sample mean was 151.83 pounds. Research from other sources
suggests that the population of weights of women has a standard
deviation of 30.43 pounds. Find the 90% confidence interval
estimate of the mean weight of all women.
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data
set, we obtain these sample statistics: n=50and xbar=140.23lb.
Research from other sources suggests that the population of weights
of women has a standard deviation given by σ=32.31 lb.
a. Find the best point estimate of the mean weight of all
women.
b. Find a 99 % confidence interval estimate of the mean weight
of all women.
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data
set, we obtain these sample statistics: n=50 and x overbar=142.71
lb. Research from other sources suggests that the population of
weights of women has a standard deviation given by sigma=31.7631.76
lb.
a. Find the best point estimate of the mean weight of all
women.
b. Find a 90% confidence interval estimate of the mean weight
of all women.
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data
set, we obtain these sample statistics:
nequals=4040
and
x overbarxequals=147.53
lb. Research from other sources suggests that the population of
weights of women has a standard deviation given by
sigmaσequals=32.57
lb.
a. Find the best point estimate of the mean weight of all
women.
b. Find a 95% confidence interval estimate of the mean weight of
all women.
Using the simple random sample of weights of women from a data set, we obtain these...
Using the simple random sample of weights of women from a data
set, we obtain these sample statistics: n equals = 35 and x
=146.25 lb. Research from other sources suggests that the
population of weights of women has a standard deviation given by
sigma σ equals = 30.78 lb. a. Find the best point estimate of the
mean weight of all women. b. Find a 95% confidence interval
estimate of the mean weight of all women.
The weights of a random sample of 121 women between the ages of 25 and 34...
The weights of a random sample of 121 women between the ages
of 25 and 34 had a standard deviation of 12 pounds. The weights of
121 women between the ages of 55 and 64 had a standard deviation 15
pounds. Test the claim that the older women are from a population
with a standard deviation greater than that for women in the 25 to
34 age group. Use α = 0.05.
Consider class data set to represent a simple random sample of the student. Construct the confidence...
Consider class data set to represent a simple random sample of
the student. Construct the confidence intervals required and also
write sample statistics calculated for each.
a) Calculate the 9% t-confidence interval for the mean pulse of
all the student
B) Calculate the 95%confidence interval for the true proportion
of all student who are registered
Voter Reg
Pulse Rate
64
75
74
65
72
72
60
66
60
69
89
64
71
50
80
80
62
85
60
65...
A simple random sample of birth weights in the United States has a mean of...
A simple random sample of birth weights in the United States
has a mean of 3433g. The standard deviation of all birth weights
(for the population) is 495g.
If this data came from a sample size of 75, construct a 95%
confidence interval estimate of the mean birth weight in the United
States.
If this data came from a sample size of 7,500, construct a 95%
confidence interval estimate of the mean birth weight in the United
States.
Which...
A simple random sample of pulse rates of 20 women from a normally distributed population results...
A simple random sample of pulse rates of 20 women from a
normally distributed population results in a standard deviation of
12.2beats per minute. The normal range of pulse rates of adults is
typically given as 60 to 100 beats per minute. If the range rule of
thumb is applied to that normal range, the result is a standard
deviation of 10 beats per minute. Use the sample results with a
0.01 significance level to test the claim that pulse...
A simple random sample of pulse rates of 60 women from a normally distributed population results...
A simple random sample of pulse rates of 60 women from a
normally distributed population results in a standard deviation of
12.7 beats per minute. The normal range of pulse rates of adults is
typically given as 60 to 100 beats per minute. If the range rule of
thumb is applied to that normal range, the result is a standard
deviation of 10 beats per minute. Use the sample results with a
0.01 significance level to test the claim that...
ADVERTISEMENT
ADVERTISEMENT
Latest Questions
- Cash Budgeting Dorothy Koehl recently leased space in the Southside Mall and opened a new business,...
- Please answer any or all, thank you!! ______ 30. Most industrialized nations in the world now...
- In this problem you will need to read about the functions numpy.load and numpy.bincount. Store all...
- Given two integer arrays sorted in the ascending order, code the function SortArrays to merge them...
- Consider a newly issued straight bond with par value of $1,000 and 3 years until maturity....
- Run a regression analysis on the following bivariate set of data with y as the response...
- Write a single python file to perform the following tasks: (a) Get dataset “from sklearn.datasets import...
ADVERTISEMENT