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

Impact of government regulation on managerial decision, Impact of governme...

Impact of government regulation on managerial Decision making Impact of government regulation on managerial Decision making how methods of control can influence market prices.

Lpp, A paper mill produces two grades of paper viz., X and Y. Because of ra...

A paper mill produces two grades of paper viz., X and Y. Because of raw material restrictions, it cannot produce more than 400 tons of grade X paper and 300 tons of grade Y paper i

Define ACCOUNTING PERIOD , Any time period specific for which economical re...

Any time period specific for which economical reports are prepared. Talk about FISCAL PERIOD.

Absorption distributions , Absorption distributions Probability distribu...

Absorption distributions Probability distributions which represent the number of 'individuals' (such as particles) which fail to cross the speci?ed area containing the hazards o

Description of sample at baseline, Description of Sample at Baseline 1...

Description of Sample at Baseline 1. Describe the sample characteristics and baseline values, comparing the two groups'characteristics. With any analysis, the first step

How to calculate Median?, Median The median describes the value of the ...

Median The median describes the value of the middle term in data. The data set must be ranked first in increasing order before the middle value is identified. The median separa

Payroll, is about deductions

is about deductions

Simple random sample, A simple random sample of n = 300 full-time workers i...

A simple random sample of n = 300 full-time workers is selected from a company list containing the names of all n = 5000 full-time workers in order to evaluate job satisfaction. Gi

Vectors, What do u mean by Vectors? Explain its types.

What do u mean by Vectors? Explain its types.

Balance sheet-actual reserves , (a)   The bank's excess reserves are its ac...

(a)   The bank's excess reserves are its actual reserves less required reserves. Actual reserves are given as $450 from its balance sheet. Required reserves are given by the produc

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