Question

Explain the relationship between the population mean μ, the sample mean X−, and a value of...

  1. Explain the relationship between the population mean μ, the sample mean X−, and a value of the sample mean x−. Which is the population parameter, which is a statistic, which is a point estimate, and which is an estimator?

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Discuss the advantages and disadvantages of estimating a population parameter (for example like the population mean  μ...
Discuss the advantages and disadvantages of estimating a population parameter (for example like the population mean  μ or a population proportion p) using a point estimate form a sample as opposed to using an interval estimate also based on the sample which is called confidence interval.
Given the sample mean, x, the assumed population mean, μ, the sample standard deviation,s, and the...
Given the sample mean, x, the assumed population mean, μ, the sample standard deviation,s, and the sample size, n, what is the formula to compute the t-statistic for our sample mean? In other words, what is the t-score in “the x distribution”? What is the number of degrees of freedom?
Suppose that X and Y are random samples of observations from a population with mean μ...
Suppose that X and Y are random samples of observations from a population with mean μ and variance σ2. Consider the following two unbiased point estimators of μ. A = (2/3)X + (1/3)Y B = (5/4)X - (1/4)Y Find variance of A. Var(A) and Var(B) Efficient and unbiased point estimator for μ is = ?
Given a (1- ∝)% confidence interval for population mean; μ is [54.15 , 56.25]. Find the...
Given a (1- ∝)% confidence interval for population mean; μ is [54.15 , 56.25]. Find the value of: (a) the unbiased point estimator; ( sample mean; ⨰ ) for the population mean. (b) the margin of error, E. (c) Hence, if population standard deviation; σ = 3.5 and the number of samples; n =74, find the significance level α correct to 2 decimal places. [6 M]
Assume that a sample is used to estimate a population mean μ μ . Find the...
Assume that a sample is used to estimate a population mean μ μ . Find the margin of error M.E. that corresponds to a sample of size 10 with a mean of 17.7 and a standard deviation of 17.6 at a confidence level of 99.8%. Report ME accurate to one decimal place because the sample statistics are presented with this accuracy. M.E. =
Assume that a sample is used to estimate a population mean μ μ . Find the...
Assume that a sample is used to estimate a population mean μ μ . Find the 99.5% confidence interval for a sample of size 36 with a mean of 41.5 and a standard deviation of 15.2. Enter your answer as an open-interval (i.e., parentheses) accurate to 3 decimal places. 99.5% C.I. = The answer should be obtained without any preliminary rounding.
Use the t-distribution to find a confidence interval for a mean μ given the relevant sample...
Use the t-distribution to find a confidence interval for a mean μ given the relevant sample results. Give the best point estimate for μ, the margin of error, and the confidence interval. Assume the results come from a random sample from a population that is approximately normally distributed. A 90% confidence interval for μ using the sample results x¯=3.5, s=0.4, and n=100 Round your answer for the point estimate to one decimal place, and your answers for the margin of...
What is sampling error? A.The discrepancy between a sample estimate of a population parameter and the...
What is sampling error? A.The discrepancy between a sample estimate of a population parameter and the real population parameter B.The discrepancy between the sample mean and the sample standard deviation C.The discrepancy between the observed mean of one group in the sample and the observed mean of another group in the sample D.The discrepancy between two population parameters of interest
Assume that a sample is used to estimate a population mean μ . Find the 99.5%...
Assume that a sample is used to estimate a population mean μ . Find the 99.5% confidence interval for a sample of size 279 with a mean of 56.9 and a standard deviation of 11.5. Enter your answer as a tri-linear inequality accurate to 3 decimal places. < μ
a. What is the difference between population mean and sample mean? b. Describe the difference between...
a. What is the difference between population mean and sample mean? b. Describe the difference between point estimate and a confidence interval? c. Describe the role that confidence level play in the confidence interval?
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT