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

Business Simulation Model, How much does cost for developing a simple model...

How much does cost for developing a simple model using Simuli 8 software and 2 pages write up (Explaining model). This is for my university assignment. For example last year assig

Making decision - hypothesis testing, Making Decision Lastly a deci...

Making Decision Lastly a decision  should  be arrived as to whether the null  hypothesis is  to be accepted  or rejected. In  this regard the value  of the test  statistic

Linear programming, Ask question #Minimum 100 words acceptNas food produces...

Ask question #Minimum 100 words acceptNas food produces to kinds of popular dark chocolate bars. the banana and coffee. the banana bar costs 0.22 to make and sells of 0.35, where a

Uses of standard deviation - measure of dispersion, Uses   of Standard D...

Uses   of Standard Deviation Normal 0 false false false EN-IN X-NONE X-NONE

Explain the history of boots and shoes, Question 1 Explain any five access...

Question 1 Explain any five accessory industries Question 2 Explain the history of boots and shoes Question 3 Write short notes on following- Types of Gujarati emb

Process, process of operation research

process of operation research

Operations research approach to problem solving, Formulation of the Problem...

Formulation of the Problem: Before proceeding to find the solution of a problem, first of all a manager should be competent enough to form an appropriate model. To do so f

Least cost methods, The NW  corner  rule  described  earlier considers only...

The NW  corner  rule  described  earlier considers only  the availability  and supply  requirements  in making  assignments. It takes  no account  of the shipping  costs  given  in

Demerits - correlation regression analysis, Demerits a.It cannot  be ...

Demerits a.It cannot  be used in  the case  of  bi variate distribution. b.If the  numbers  of items  are greater than say  30, the calculation becomes  tedious  and  requ

Linear programming , #questionQuestion. a paper mill produces two grades o...

#questionQuestion. a paper mill produces two grades of paper viz.,xand y.Bacause of raw material restrictions, it cannot produce more than 400 tones of grade x paper and 300 tons

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