Practical problems arise in establishing a frame

Assignment Help Basic Statistics
Reference no: EM131122448

The best way to gain understanding of a sampling and estimation method is to carry it out on some real population of interest to you. If you are not already involved in such a project professionally, choose a population and set out to estimate the mean or total by taking a simple random sample. Examples include estimating the number of trees on a university campus by conceptually dividing the campus into plots, estimating the number of houses in a geographic area by selecting a simple random sample of blocks, or estimating the mean number of people per vehicle during rush hour. In the process of carrying out the survey and making the estimates, think about or discuss with others the following:

(a) What practical problems arise in establishing a frame, such as a map or list of units, from which to select the sample?

(b) How is the sample selection actually carried out?

(c) What special problems arise in observing the units selected?

(d) Estimate the population mean and total.

(e) Estimate the variance of the estimators used in part (d).

(f) How would you improve the survey procedure if you were to do it again?

Reference no: EM131122448

Questions Cloud

What is the sum of the balances in the accounts : What is the balance of the controlling account at June 30?
Describe potential challenge related to payment for services : Develop a brief description of a hypothetical adult patient who has a serious health problem or injury. Imagine this patient lives in your local area. If you are an international student, you may choose a geographic area in the United States or us..
Explain technical insolvency legal insolvency bankruptcy : Explain the differences among the following terms related to financial failure: a. Technical insolvency b. Legal insolvency c. Bankruptcy
Repeat the simulation exercise with the tree data : (b) Using n = 15 compare your results to those of part (a) first by inspection of the two histograms (note the scale) and by comparing the numerical results summarizing mean and variance of the estimator.
Practical problems arise in establishing a frame : The best way to gain understanding of a sampling and estimation method is to carry it out on some real population of interest to you. If you are not already involved in such a project professionally, choose a population and set out to estimate the..
Explain the difference between the economic and financial : Explain the difference between the economic and financial definitions of business failure.
The following cash receipts journal headings : The following cash receipts journal headings have been suggested for a small service firm. List the errors you find in the headings.
What is a leveraged buyout? what is mezzanine financing : What is a leveraged buyout? What is mezzanine financing?
Denominator and the population variance : Show that E(s2) = σ2 in simple random sampling, where the sample variance s2 is defined with n - 1 in the denominator and the population variance σ2 is defined with N - 1 in the denominator.

Reviews

Write a Review

Basic Statistics Questions & Answers

  Computing binomial variable and hypothesis testing

A snack company distributes chips in bags labeled 6 ounces. The local Bureau of Weights and Measures randomly selects 50 bags of chips and obtains a sample mean of 5.9 ounces.

  Describe the variables and scale of measurement

Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis and describe the variables and scale of measurement. Identify whether each factor is fixed or repeating.

  Amounts of hydrocarbon emissions resulting from road wear

The following observations are amounts of hydrocarbon emissions resulting from road wear of bias-belted tires under a 522 kg load inflated at 228 kPa and driven at 64 km/hr for 6 hours ("Characterization of Tire Emissions Using an Indoor Test Fac..

  Are mean crash damages same for three vehicles

Five test vehicles of each type were crashed, with the results shown below. Research question: Are the mean crash damages the same for these three vehicles?

  Find confidence interval for average amount left by groups

Based on long term experience, the standard deviation can be taken to be $2.92. Find a 90% confidence interval for the average amount left by all groups.

  Confidence of estmating the population mean

If you want to be 95% confidence of estmating the population mean to within a sampling error of +-4 and the standard deviation is assumed to be 10, what sample size is required?

  Explaining two tail t-test

For which of given variables must a "two tail" t-test be applied?

  The lengths of pregnancies are normally distributed with a

the lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. random

  Simple random sampling-cluster sampling

Compare the differences of Simple random sampling & Cluster sampling using specific examples, and show the pros and cons of each method.

  Identify what is the best measure of variability to use

Which would be inappropriate, and why. Then identify what you think is the best measure of variability to use for your example and explain why you believe it to be better than the others.

  Find probability-mean amount of electric bills is in range

Find the probability that the mean amount of electric bills for a random sample of 75 households selected from this city will be between $132 and $136. Round to 4 decimal places.

  Probability-defective battery

A carton of 6 batteries contains 2 that are defective and 4 that are good. If we select 3 batteries at random form this carton, what is the probability that the sample contains exactly 1 defective battery?

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