The technique of randomization used for the selection of sample units makes the test of significance valid for us, for applying the test of significance we first set up a hypothesis a definite statement about the population parameter. Such a hypothesis, which is usually a hypothesis of no difference is called null hypothesis and is usually denoted by H0. According to Prof. R.A.Fisher, null hypothesis is the hypothesis which is tested for possible rejection under the assumption that it is true.

For example, in case of a single statistic, H0 will be that the sample statistic does not differ significantly from the hypothetical parameter values and in the case of two statistics, H0 will be that the sample statistics do not differ significantly.

Having set up the null hypothesis we compute the probability p that the deviation between the observed sample statistic and the hypothetical parameter value might have occurred due to fluctuations of sampling. If the deviation comes out to be significant, null hypothesis is rejected at the particular level of significance adopted and if the deviation is not significant, null hypothesis may be retained at that level.

Any hypothesis which is complementary to the null hypothesis is called an alternative hypothesis, usually denoted by H1. For example, if we want to test the null hypothesis that the population has a specified mean μ0, that is H0: μ = μ0, then the alternative hypothesis could be

- H1: μ ≠ μ0
- H1: μ > μ0
- H1: μ < μ0

The alternative hypothesis in (i) is known as a two tailed alternative and the alternative in (ii) and (iii) are known as right tailed and left-tailed alternatives respectively. The setting of alternative hypothesis is very important since it enables us to decide whether we have to use as single-tailed or two tailed test.

**To Schedule a Null Hypothesis tutoring session
To submit Null Hypothesis assignment click here.**

- Procedure for testing of hypothesis
- Test Of Significance For Large Samples
- Sampling Of Attributes
- Test of significance for difference of proportions
- Sampling of Variables
- Standard Error Of Sample Mean
- Test Of Significance For Single Mean
- Test Of Significance For Difference Of Means
- Test Of Significance For The Difference Of Standard Deviations

Assignment Writing Help

- Science Assignment Help
- Math Assignment Help
- Chemistry Assignment Help
- Physics Assignment Help
- Biology Assignment Help
- Psychology Assignment Help
- History Assignment Help
- Geography Assignment Help
- English Assignment Help
- Humanities Assignment Help
- Nursing Assignment Help
- Social Science Assignment Help
- Arts and Architecture Help
- Statistics Assignment Help
- Law Assignment Help
- Computational Mathematics Assignment Help

Engineering Assignment Services

- Programming Assignment Help
- Database Help
- Data Structure Assignment Help
- Operating Systems Assignment Help
- Computer Network Assignment Help
- UML Diagram Assignment Help
- IT Assignment Help
- Game Programming Help
- Computer Science Assignment Help
- Information Systems Assignment Help
- Chemical Engineering Assignment Help
- Civil Engineering Assignment Help
- Electrical, Electronics Help
- Mechanical Engineering Assignment Help
- Petroleum Engineering Assignment Help
- Biochemical and Biotechnology Help

Do My Assignment Help

- Accounting Assignment Help
- Finance Assignment Help
- Economics Assignment Help
- Marketing Assignment Help
- Human Resources Assignment Help
- Operations Management Assignment Help
- Strategy and Planning Help
- Project Management Help
- Case Studies Writing Help
- Political science
- Referencing Help
- Assignment Help Websites
- Online Assignment Help
- Do My Assignment
- Do My Homework

Write My Essay Services

- Essay Writing Help
- Business Essay Writing Help
- Assignment Writing Services
- Plagiarism Free Essay Writing
- Essay Editing Service
- Dissertation Writing Services
- Custom Writing Help
- Write My Essay
- Thesis Writing Help
- Write My Paper
- Paper Writing Service
- Academic help
- College Essay Writing
- Cheap Essay Writing