Alternative hypothesis
Any hypothesis other than null hypothesis is called alternative hypothesis. If the working hypothesis is proved wrong or reject another hypothesis is formulated to be tested to be tested to produce the desired result which is known as alternative hypothesis.
A statistical hypothesis is a hypothesis concerning the parameter or form of the probability distribution for a designed population , more generally of a probabilistic mechanism which is supposed to generate the observation.
Null hypothesis: It is usually stated for the purpose of possible acceptance denoted by H0, Null hypothesis simply means NO DIFFERENCE .
EXAMPLE; When we want to test whether the population mean is 65 the null hypothesis is population mean is 65 and alternative hypothesis is population mean is not 65.
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