The point estimate of the population mean is $62,339. Sample size 350. Standard deviation 19331.91502 Construct...
The point estimate of the population mean is $62,339. Sample size 350. Standard deviation 19331.91502
- Construct a 99% confidence interval for the population mean. Assume that your data is normally distributed and σ is unknown.
Homework Answers
if 
be the point
estimate of population mean and 
be the sample standard
deviation from a sample of size n .
Then 
% confidence interval is given by :
So, here df = 350-1 = 349
So, CI :
= 
= (59924.0977 , 64753.9023)
Add Answer to:
The point estimate of the population
mean is $62,339. Sample size 350. Standard deviation
19331.91502
Construct...
A simple random sample of size 14 has mean 3.67 and standard deviation 1.75. The population...
A simple random sample of size 14 has mean 3.67 and standard deviation 1.75. The population is approximately normally distributed. Construct a 99% confidence interval for the population mean. 1. The parapmeter is the population (choose one) mean, standard deviation, variable, proportion 2. The correct method to find the confidence interval is the (choose one) z, t, chi square method
6. A sample of size n- 200 has a known population standard deviation of 15.0. The...
6. A sample of size n- 200 has a known population standard deviation of 15.0. The population appears to be skewed. Determine whether a margin of error should be calculated using a critical value of za, a critical value of ta/2, or neither. Oa critical value of ta2 O a critical value of za O neither 7. The mean of a sample size n 35 is 1860. The standard deviation of the sample is 102 and the population is normally...
13. A random sample is drawn from a population of known standard deviation 11.3. Construct a...
13. A random sample is drawn from a population of known standard deviation 11.3. Construct a 90% confidence interval for the population mean based on the information given (not all of the information given need be used). a. n-36, x =105.2, s=11.2 b. n-100, x =105.2, s - 11.2 14. A random sample is drawn from a population of unknown standard deviation. Construct a 99%99% confidence interval for the population mean based on the information given. a. n=49, x 17.1,...
A random sample of 43 observations is used to estimate the population variance. The sample mean...
A random sample of 43 observations is used to estimate the population variance. The sample mean and sample standard deviation are calculated as 68.5 and 3.1, respectively. Assume that the population is normally distributed. (You may find it useful to reference the appropriate table: chi-square table or F table) a. Construct the 95% interval estimate for the population variance. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval to b. Construct...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the...
Answers only is okay! Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.99, x=13.1, s=3.0, n= 6 Construct the indicated confidence interval for the population mean μ using the t-distribution. Assume the population is normally distributed. c=0.95, x=14.5, s=0.55, n= 15 Use the given confidence interval to find the margin of error and the sample mean. (12.7,19.9The sample mean is In a random sample of 18 people, the mean...
Construct a 95% confidence interval for the population standard deviation sigma of a random sample of...
Construct a 95% confidence interval for the population standard deviation sigma of a random sample of 15 men who have a mean weight of 165.2 pounds with a standard deviation of 12.5 pounds. Assume the population is normally distributed.
Construct a 95% confidence interval for the population standard deviation o of a random sample of...
Construct a 95% confidence interval for the population standard deviation o of a random sample of 15 men who have a mean weight of 165.2 pounds with a standard deviation of 13.5 pounds. Assume the population is normally distributed.
Construct a 95% confidence interval for the population standard deviation σ of a random sample of...
Construct a 95% confidence interval for the population standard deviation σ of a random sample of 15 crates which have a mean weight of 165.2 pounds and a standard deviation of 12.9 pounds. Assume the population is normally distributed
You want to obtain a sample to estimate a population mean. Based on previous evidence, you...
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 52.6. You would like to be 90% confident that your estimate is within 2 of the true population mean. How large of a sample size is required? Hint: Video [+] n = Question Help: Message instructor Submit Question The body temperatures in degrees Fahrenheit of a sample of adults in one small town are: 96.3...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions need to be made to construct this interval? x=88 20 n 11 What assumptions need to be made to construct this interval? Tre O A. The population mean will be in the confidence interval. en OB. The sample size is less than 30. et c . The population must be normally distributed. D. The population is skewed to one side. With 99% confidence, when...
6. A sample of size n- 200 has a known population standard deviation of 15.0. The population appears to be skewed. Determine whether a margin of error should be calculated using a critical value of za, a critical value of ta/2, or neither. Oa critical value of ta2 O a critical value of za O neither 7. The mean of a sample size n 35 is 1860. The standard deviation of the sample is 102 and the population is normally...
13. A random sample is drawn from a population of known standard deviation 11.3. Construct a 90% confidence interval for the population mean based on the information given (not all of the information given need be used). a. n-36, x =105.2, s=11.2 b. n-100, x =105.2, s - 11.2 14. A random sample is drawn from a population of unknown standard deviation. Construct a 99%99% confidence interval for the population mean based on the information given. a. n=49, x 17.1,...
A random sample of 43 observations is used to estimate the population variance. The sample mean and sample standard deviation are calculated as 68.5 and 3.1, respectively. Assume that the population is normally distributed. (You may find it useful to reference the appropriate table: chi-square table or F table) a. Construct the 95% interval estimate for the population variance. (Round intermediate calculations to at least 4 decimal places and final answers to 2 decimal places.) Confidence interval to b. Construct...
You want to obtain a sample to estimate a population mean. Based on previous evidence, you believe the population standard deviation is approximately o = 52.6. You would like to be 90% confident that your estimate is within 2 of the true population mean. How large of a sample size is required? Hint: Video [+] n = Question Help: Message instructor Submit Question The body temperatures in degrees Fahrenheit of a sample of adults in one small town are: 96.3...
Construct a 99% confidence interval to estimate the population mean using the following data. What assumptions need to be made to construct this interval? x=88 20 n 11 What assumptions need to be made to construct this interval? Tre O A. The population mean will be in the confidence interval. en OB. The sample size is less than 30. et c . The population must be normally distributed. D. The population is skewed to one side. With 99% confidence, when...
Most questions answered within 3 hours.
-
A combustion reaction is describes as a carbon source reacting
with oxygen and producing carbon dioxide...
asked 3 minutes ago -
Buckminsterfullerence is a recently allotrope of carbon in which
carbon atoms form molecules of formula C_60,...
asked 6 minutes ago -
Lower Equitorial and Upper Equitorial are the same except Lower
Equitorial has a larger capital stock....
asked 11 minutes ago -
how do you think that pH of a jar where you have added a certain
amount...
asked 20 minutes ago -
If the Federal Reserve increases the reserve requirement, what
will happen to the Money Supply in...
asked 15 minutes ago -
Suppose that market demand for a good is given by Q = 9 - 0.3 P...
asked 22 minutes ago -
two thin lenses are separated by a distance x. The first lens
has a focal length...
asked 23 minutes ago -
The computer that controls a bank's automatic teller machine
crashes a mean of 0.6 times per...
asked 27 minutes ago -
`1) How is -9 (base 10) represented in 8-bit two's complement
notation?
a) 00001001
b)11110111
c)11110110...
asked 36 minutes ago -
A 10.000 g sample of water contains 11.19% H by mass. what
should be the %H...
asked 54 minutes ago -
Consider an investment game among 2 players. Each player can
either invest,
i, or not invest,-i....
asked 52 minutes ago -
The time taken to complete a particular task is normally
distributed with a standard deviation of...
asked 1 hour ago