What is the variance of sample means

Assignment Help Basic Statistics
Reference no: EM132845116

A population is knows to have a mean of mu=25 and a variance of var=3. Fifty samples are drawn from the population and sample means calculated for each. What is the variance of these sample means?

Reference no: EM132845116

Questions Cloud

Construct a frequency distribution : Construct a frequency distribution ( show a table ) of data collected on the cost of books this last semester for a random sample of 30 UCF students.
Analyze the digitalization of marketing : Critically analyze how digital marketing that are transforming the marketing activities - analyze the digitalization of marketing under the current situation
Why does jefferson focus more on the king than parliament : What did Paine and Jefferson say about the monarchy in their respective documents? Why does Jefferson focus more on the king than parliament?
Find 7th decile and 85th percentile : The values below are the average July temperature(C) in central England for 1987 to 1996 15.9, 14.7, 18.2, 16.9, 17.3, 16.2, 15.2, 18.0, 18.6, 16.5.
What is the variance of sample means : Fifty samples are drawn from the population and sample means calculated for each. What is the variance of these sample means?
Explain irony of thomas jefferson acquisition of louisiana : Explain the irony of Thomas Jefferson's acquisition of Louisiana. What were the reasons for the Embargo Act of 1807, and what were its consequences?
What are the mean and variance of the posterior : (a) For the prior suggested by the expert, find the posterior. (b) What are the mean and variance of the posterior
Construct and interpret a confidence interval for proportion : Construct and interpret a 95% confidence interval for the proportion of all U.S. adults who would include the 9/11 attacks on their list of 10 historic events.
What compromises did the constitution make on institution : How did the authors of the Constitution create a balance between federal and state governments, and between large and small states?

Reviews

Write a Review

Basic Statistics Questions & Answers

  Hypothesis test parameter

Microsoft Excel was used on a set of data involving the number of parasites found on 46 Monarch butterflies captured in Pismo Beach State Park.

  What is the probability that no red gumball is drawn

These are drawn at random and not placed back into the jar. What is the probability that no red gumball is drawn?

  Find the probability that they will meet

Find the probability that they will meet if they arrive independently at random times between 5 and 6 P.M.

  Suppose that you work for the child social services agency

suppose that you work for the child social services agency in your county. your job is to investigate instances of

  How were jeffersonian or republican goals often inconsistent

How were "Jeffersonian" or "Republican" goals often inconsistent? Were political and economic leaders, or the American people themselves

  Preference for powerade

Ashley is a hard-core runner. She and all her friends prefer Powerade Ion4 to Gatorade. Explain why Ashley's experience is not good evidence

  Control limits for bad sectors on diskettes

A computer diskette manufacturer is concerned that some diskettes have bad sectors that would cause a diskette to hold less information than it was intended to hold.

  Compute the test and p-value using standard deviation

Standard deviation of the population is 9 hours. Give the null and alternative hypotheses. Compute the test and p-value. Use a=0.01 to make your conclusion based on the p-value.

  What is the probability that more than

What is the probability that more than 310 people in her sample will listen to music.

  Confidence interval and interpret the interval

The positive effect of water fluoridation on dental health is well documented. One study that validates this is described in the article

  Is the sampling result significant

Average total daily sales at a small food store are known to be $452.80.- A random sample of 12 days shows = $501.90 and s = $65.00. Using α = 0.05, is the sampling result significant? Explain.

  A the probability that the mean height for the sample is

the mean height of women in a country ages 20-29 is 64.2 inches. a random sample of 75 women in this age group is

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd