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

Answering question to find shortest path, Answering Question to Finding Sho...

Answering Question to Finding Shortest Path - Operation Research Assignment Help Finding answers for shortest path problems are quite interesting and not easy to solve. In solv

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

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

Principles of construction of research tool, Principles of Construction of ...

Principles of Construction of Research Tool Content of research tool should be based on aims and need of research problem: The questioning words must be concise compreh

Operation research, Discuss the methodology of operation research

Discuss the methodology of operation research

Identify the various ways of selecting a random sample, Question 1 Discuss...

Question 1 Discuss the types of measurement scales used in research Question 2 Identify the various ways of selecting a random sample Question 3 Discuss five advan

Quantitative research methods, Select one of the topics listed 1-6 below ...

Select one of the topics listed 1-6 below and outline a programme of quantitative research for its investigation.  The assignment  should cover issues of sample design, instrumen

Waiting queques, During busy times, 60 potential customers per hour arrive ...

During busy times, 60 potential customers per hour arrive at the booth (assume a Poisson distribution). A booth worker takes 5 minutes, on average, to meet the information needs of

Classification of documents - books, Books: Books form  one of the pri...

Books: Books form  one of the primary sources of information. They provide a cohesively organised (thought content) information on a specific subject of optimum depth. Since b

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

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

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