Z-test - hypothesis testing, Operation Research

Assignment Help:

Z-Test

Prof. Fisher has  given a method  of testing the significance of the correlation coefficient in small  samples. According  to this method the  coefficient of correlation is transformed into Z  and hence the  name  transformation. The statistic Z given by  prof. Fisher is used  to test:

a.Whether  an observed value  of r differs significantly from some  hypothetical value or.

b.Whether two samples values of  r differ significantly,

For  testing whether r differs significantly from zero the t- test is preferable.

In order to apply the test  we have to calculate Z and by applying Fisher transformation and then  calculate the  value  of the standard  normal  variate.

                 Z- ε / 1/√n-3


Related Discussions:- Z-test - hypothesis testing

MODI method, explain the procedure of MODI method of finding solution throu...

explain the procedure of MODI method of finding solution through optimaly test.

Expected value analysis, Profitable Casino Corp. (PCC) is a Harrah's wannab...

Profitable Casino Corp. (PCC) is a Harrah's wannabe, intent on mimicking Harrah's analytical marketing techniques.  For example, PCC issues virtually all gamers a PCC "Rewards" car

CHARACTERISTIC, O.R REPLACES MANAGEMENT BY PERSONALITY

O.R REPLACES MANAGEMENT BY PERSONALITY

Report writing - report writing presentation, REPORT WRITING The final...

REPORT WRITING The final step in research is to report the study  findings to those  who authorized the investigation. The American marketing association is  of the opinion  t

Explain what do you understand by dynamic programming, Question: (a) (i...

Question: (a) (i) Explain what do you understand by ‘Dynamic Programming'. (ii) Describe the dynamic programming approach to solve the shortest route problem. (iii) Outli

Dynamic programming models, Dynamic programming may be considered thoutgr...

Dynamic programming may be considered thoutgrowth of mathematical programming and involves the optimization of multistage( sequence of inter related decisions) decision process

Identify and comment on cultural similarities, You are required to analyse ...

You are required to analyse the case study, as indicated under these headings: 1. Identify FIVE persons, bodies, organisations or groups in the case study. 2. For EACH of the

Linear programming, Meaning of Linear programming problem and explanation o...

Meaning of Linear programming problem and explanation of graphical method of solving Linear Programming Problem

Linear programming, . A paper mill produces two grades of paper viz., X and...

. 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

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