A population consists of 3 numbers: 2, 10 and 6. You randomly select a sample of...
A population consists of 3 numbers: 2, 10 and 6. You randomly select a sample of 2 observations without replacement and calculate the sample mean. The variance of the sample mean is _____.
Group of answer choices
4
8/3
4/6
Homework Answers
The observations taken 2 at a time are:
(2, 10), (2, 6), (10, 6), (10, 2), (6, 2), (6, 10)
Sample means are: 6, 4, 8, 6, 4, 8
Hence,
Variance of sample means
= var(6, 4, 8, 6, 4, 8) [Excel Formula]
= 8/3
Option B is correct.
Add Answer to:
A population consists of 3 numbers: 2, 10 and 6. You randomly
select a sample of...
A population consists of numbers 15, 9, 24, 6, and 18. 1. Draw all possible samples...
A population consists of numbers 15, 9, 24, 6, and 18. 1. Draw all possible samples of size 3 with replacement from the given population. 2. Find mean of each sample 3. Construct sampling distribution of sample mean. 4. Verify that mean of all sample means is equal to population mean.
6.4 2. Three randomly selected households are surveyed. The numbers of people in the households are...
6.4 2. Three randomly selected households are surveyed. The numbers of people in the households are 1, 4, and 10. Assume that samples of size n=2 are randomly selected with replacement from the population of 1, 4, and 10. Listed below are the nine different samples. Complete parts (a) through (c). Sample x1 x2 1 1 1 2 1 4 3 1 10 4 4 1 5 4 4 6 4 10 7 10 1 8 10 4 9 10 ...
ee randomly selected households are surveyed. The numbers of people in the households are 4,5, and 9. Assume that samples of size n 2 are randomly selected with replacement from the population...
ee randomly selected households are surveyed. The numbers of people in the households are 4,5, and 9. Assume that samples of size n 2 are randomly selected with replacement from the population of 4, 5, and 9. Listed below are the nine d Complete parts (a) through (c). 4,4 4,5 4,9 5,4 5,5 59 9,4 95 9,9p a. Find the variance of each of the nine samples, then summarize the sampling distribution of the variances in the format of a...
use sample 1,2,2,5,5 rest stays the same A population consists of 5 numbers: 1, 2, 2,...
use sample 1,2,2,5,5 rest stays the same
A population consists of 5 numbers: 1, 2, 2, 2, 3. Consider all possible samples of size two which can be drawn with replacement from this population. Find a) the mean of the population, b) the standard deviation of the population, e) the mean of the sampling distribution of means, d) the standard deviation of the sampling distribution of means. 6. Using the data of Problem 5, compute the mean of the sampling...
1. Three randomly selected households are surveyed. The numbers of people in the households are 3, 4 and 11. Assume that samples of size n=2 are randomly selected with replacement from the populatio...
1. Three randomly selected households are surveyed. The numbers of people in the households are 3, 4 and 11. Assume that samples of size n=2 are randomly selected with replacement from the population of3, 4, and 11. Listed below are the nine different samples. Complete parts (a) through (c).3,3 3,4 3,11 4,3 4,4 4,11 11,3 11,4 11,11a. Find the variance of each of the nine samples, then summarize the sampling distribution of the variances in the format of a table...
Suppose a population consists of the four numbers 2, 4, 6 and 8. Consider all random...
Suppose a population consists of the four numbers 2, 4, 6 and 8. Consider all random samples of size n that can be formed by sampling with replacement. Hint: Consider the box below when we make n draws with replacement. What is the sampling distribution of sample mean when n =25? Approximately Normal [5, 0.48] Approximately Normal [6, 0.49] Approximately Normal [4, 0.49] Approximately Normal [6, 0.24] Approximately Normal [4, 0.24] Approximately Normal [100, 150] Approximately Normal [25, 0.33] Approximately...
please show work/reasoning if possible 11: Suppose a population consists of the four numbers 2, 3,...
please show work/reasoning if possible 11: Suppose a population consists of the four numbers 2, 3, 5 and 6. Consider all random samples of size n that can be formed by sampling with replacement. Hint: Consider the box below when we make n draws with replacement. What is the sampling distribution of sample mean , when n =100? Hint: 1) The notation used: Normal [mean, SD2]
answer all the questions, I will give u a thumb! 1.3 A portfolio consists of 10...
answer all the questions, I will give u a thumb!
1.3 A portfolio consists of 10 shares of stock A and 8 shares of stock B. The price of A has a mean of 10 and variance of 16, while the price of B has a mean of 12 and a variance of 9 The correlation between prices is 0.3. What are the mean and variance of the portfolio value? 2.1 2.1.a State the definition of the sampling distribution of...
Three randomly selected households are surveyed. The numbers of people in the households are 2, 4,...
Three randomly selected households are surveyed. The numbers of people in the households are 2, 4, and 12. Assume that samples of size n=2 are randomly selected with replacement from the population of 2, 4, and 12. Listed below are the nine different samples. Complete parts (a) through (c). 22,22 22,44 22,1212 44,22 44,44 44,1212 1212,22 1212,44 1212,1212 a. Find the median of each of the nine samples, then summarize the sampling distribution of the medians in the format of...
Three randomly selected households are surveyed. The numbers of people in the households are 2, 4,...
Three randomly selected households are surveyed. The numbers of people in the households are 2, 4, and 12. Assume that samples of size n=2 are randomly selected with replacement from the population of 2, 4, and 12. Listed below are the nine different samples. Complete parts (a) through (c). 22,22 22,44 22,1212 44,22 44,44 44,1212 1212,22 1212,44 1212,1212 a. Find the median of each of the nine samples, then summarize the sampling distribution of the medians in the format of...
A population consists of numbers 15, 9, 24, 6, and 18. 1. Draw all possible samples of size 3 with replacement from the given population. 2. Find mean of each sample 3. Construct sampling distribution of sample mean. 4. Verify that mean of all sample means is equal to population mean.
ee randomly selected households are surveyed. The numbers of people in the households are 4,5, and 9. Assume that samples of size n 2 are randomly selected with replacement from the population of 4, 5, and 9. Listed below are the nine d Complete parts (a) through (c). 4,4 4,5 4,9 5,4 5,5 59 9,4 95 9,9p a. Find the variance of each of the nine samples, then summarize the sampling distribution of the variances in the format of a...
use sample 1,2,2,5,5 rest stays the same
A population consists of 5 numbers: 1, 2, 2, 2, 3. Consider all possible samples of size two which can be drawn with replacement from this population. Find a) the mean of the population, b) the standard deviation of the population, e) the mean of the sampling distribution of means, d) the standard deviation of the sampling distribution of means. 6. Using the data of Problem 5, compute the mean of the sampling...
answer all the questions, I will give u a thumb!
1.3 A portfolio consists of 10 shares of stock A and 8 shares of stock B. The price of A has a mean of 10 and variance of 16, while the price of B has a mean of 12 and a variance of 9 The correlation between prices is 0.3. What are the mean and variance of the portfolio value? 2.1 2.1.a State the definition of the sampling distribution of...
Most questions answered within 3 hours.
-
Oxidative phosphorylation is achieved through chemiosmotic
coupling, which turns chemical energy into osmotic potential energy
that...
asked 38 minutes ago -
Hollywood Shoes would like to maintain their cash account at a
minimum level of $64,000, but...
asked 37 minutes ago -
Proteins CtrA-P, DnaA, and GcrA behave similarly to what
molecule in the Eukaryotic Cell Cycle?
asked 41 minutes ago -
TRUE OR FALSE
In case of a competitive tender procedure, in the request for
quotation, the...
asked 49 minutes ago -
I am a little behind please provide some explanation, will
provide thumbs up.
This question considers...
asked 52 minutes ago -
Let say the utility function as U(X,Y) = lnX + Y. Show that the
marginal rate...
asked 57 minutes ago -
A current of I=8.0A is flowing in a typical extension cord of
length L=3.00m. The cord...
asked 1 hour ago -
1. When balancing the equation H2SO4 (aq) + NaOH (aq) →
Na2SO4(aq) + H2O(aq), would you...
asked 1 hour ago -
Provide a definition of “classification hierarchy” and
illustrate your definition with an example of how and...
asked 1 hour ago -
1. Describe the four main green solvents. Provide one example of
the use of each solvent....
asked 1 hour ago -
International ethics focus on:
1) exploitation of labor
2)corruption
3) environmental impact
4) none of the...
asked 1 hour ago -
Costing Models You work for XYZ trucking and your boss has asked
you to figure out...
asked 1 hour ago