2. Types of Hypothesis

Alternative Hypothesis

It is also known as a maintained hypothesis or a research hypothesis

Firstly many hypotheses are proposed. Then among them, one is selected which is the most efficient.

There are four main types of alternative hypothesis:

Point alternative hypothesis: Population distribution in the hypothesis test is fully defined and has no unknown parameters.

Non-directional alternative hypothesis: It states that the null hypothesis is untrue.

One-tailed directional hypothesis: It is only concerned with the region of rejection for one tail of a sampling distribution.

Two-tailed directional hypothesis: It is concerned with both regions of rejection of the sampling distribution.

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