Determining the sample size for a confidence interval, Basic Statistics

Assignment Help:

1. In your own words explain the difference between a point estimate and an interval estimate of a parameter? Which is better? Why? 

2. What information is necessary to calculate a confidence interval? Is the size of the population relevant when one is determining the sample size for a confidence interval? What is necessary to determine the sample size? 

3. A researcher is interested in estimating the noise levels in decibels at area urban hospitals.  He wants to be 90% confident that his estimate is correct.  If the standard deviation is 4.8, how large a sample is needed to get the desired information and to be accurate within 0.65 decibels?


Related Discussions:- Determining the sample size for a confidence interval

Use this information to construct the 90% and 95% confidence, From random s...

From random sample of 48 days in a recent year, U.S. gasoline prices had a mean of $3.63. Assume the population standard deviation is $0.21?

Dr. s.n.de, uses of time series with example

uses of time series with example

10-k report information, Where are Cash Equivalents and Marketable Securiti...

Where are Cash Equivalents and Marketable Securities noted on a 10-K report? What needs to be included as a minimum disclosure?

Statistics & Business Research Report Proposal: Initial Rese, The initial r...

The initial research proposal will consist of the following SIX (6) items: 1. Identify a business research topic 2. Define the research questions for the identified problem or opp

Calculate the unit of omputer peripheral device, Northern Hi-Tec Electronic...

Northern Hi-Tec Electronics Limited manufactures six computer peripheral devices: internal modems , external modems , circuit boards , CD drives , hard disk drives , and memo

Researching People:Patterns and Trends., Hi I have done my report based on ...

Hi I have done my report based on SPSS data but need a help for deeper analyzing and correcting this what I have already done. Would you be able to help me and if so how much would

Free hand in measurig trend, advantages and disadvantages of free hand in m...

advantages and disadvantages of free hand in measurig trend

Valuing preferred stock, Gesto, Inc., has an issue of preferred stock outst...

Gesto, Inc., has an issue of preferred stock outstanding that pays a $4.50 dividend every year, in perpetuity. If this issue currently sells for $79.85 per share, what is the requi

Stock control, Two components, A and B, are used as follows: normal usage -...

Two components, A and B, are used as follows: normal usage - 50 per week each minimum usage - 25 per week each maximum usage - 75 per week re-order quantity - A:300; B:500 re-order

Role of accountant, What are the roles of accountant, let me know the caree...

What are the roles of accountant, let me know the career opportunity in accounting subject?

Write Your Message!

Captcha
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