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Null Hypothesis

Before explaining about Null Hypothesis, let us discuss about the conception of Hypothesis.

Hypothesis


Hypothesis is a statement about a population parameter or population distribution. Any statement that should be tested for discovering the authenticity in order to making a decision is Hypothesis.

Any claim by a producer against his product is simply a hypothesis that should be tested by the customer that the claim is true or not in order to make a decision to purchase or not.

Hypothesis testing


Two set of hypothesis may found in a hypothesis testing. Null hypothesis and alternative hypothesis.

The true statement from a pair of hypothesis is termed as Null hypothesis and other statement is alternative hypothesis.

Hypothesis testing is used for making a decision to accept or reject any of the statement. Accepting or rejecting of statement is depends of the true evidence against the statement.
Let consider  about any statement of any product stability claimed by producer equal or less from the product stability of existing supplier, then it should not very good thinking to switch to new supplier from the existing supplier. But, if the stability is very higher from the existing supplier then it should be take a decision to switch.




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Popular Topics on Physics

 Following physics phenomena are considers as world most popular physics topics. Hawking Radiation Radiation from black hole. Black holes event Horizzon continuously radiates energy. Black Hole Region in universe from where nothing can escape. General theory of relativity It is a modified form of special theory of relativity introducing gravitation into it. Higgs Boson particles Recently discovered particles in universe. Quantum mechanics Quantum mechanics explain the behavior of motion particles in small scale.

Cost and expanse

Cost In accounting cost and expanse is so far different terms. Expanse is the cost that is incured to earn revenue. Not each of the cost  is consider as expanse.  Only these cost is considered as expanse that is concerned with earning revenue. Cost may be an asset or an expanse. The condition is important when we will define expanse or not.  Let us consider a few example that can define how we say cost as an expanse. The purchased equipment for a company initially be consider as the assets of the company.  But after a certain accounting period a portion of its value will be used.  A portion of the cost is expired.  This expired cost of the equipment is considered as the depreciation expanse. In that way any purchased value may be considered as asset  and expanse. Any unexpired cost is considered  as an asset. If a company purchases land for its business operation then the land cost is an assets of the company and it will never be e...