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

LINEAR PROGRAMMING, b. A paper mill produces two grades of paper viz., X an...

b. 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 pape

Linear Programming Problem using Simple method, Solve the following Linear ...

Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0

#title, WHOM DO YOU THINK RAJENDER WILL EAT WITH? WHY?

WHOM DO YOU THINK RAJENDER WILL EAT WITH? WHY?

Lp, #question.Solve the following Linear Programming Problem using Simple m...

#question.Solve the following Linear Programming Problem using Simple method. Maximize Z= 3x1 + 2X2 Subject to the constraints: X1+ X2 = 4 X1 - X2 = 2 X1, X2 = 0.

Scientific research, Scientific research is building of knowledge throug...

Scientific research is building of knowledge through collection of empirically verifiable facts. The term verifiable here means which can be checked by others for accuracy

Determination of the operation, An operation is a combination of different...

An operation is a combination of different actions dealing with raw materials( e, g, men and machines) which form a structure from which an action with regard to broader ob

Multiple objectives- sampling decisions, Multiple  Objective s The sam...

Multiple  Objective s The sample  may vary according  to the  objective of the research. There  may several objectives  of marketing  research so the  sample  size  may vary a

Standara deviation - measure of dispersion , STANDARA DEVIATION Standa...

STANDARA DEVIATION Standard  deviation  is the  square  root of the  arithmetic  average of  squares of all  the deviations from the  mean. In short  it may  be defined  as th

MODERN MANAGEMENT, DISCUSS THE SIGNIFICANCE AND SCOPE OF OPERATION RESEARCH...

DISCUSS THE SIGNIFICANCE AND SCOPE OF OPERATION RESEARCH IN MODERN MANAGEMENT

Software, role of computer software operation research

role of computer software operation research

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