Alfred Russel Wallace - Who was collecting specimens in the Malay Archipelago, had independently conceived of natural selection.

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#Id: 4831

#Unit 13. Methods in Biology

A type I error appears when the null hypothesis (H₀) of an experiment is true, but still, it is rejected.

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#Id: 4832

#Unit 13. Methods in Biology

type I is stating something which is not present or a false hit.

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#Id: 4834

#Unit 13. Methods in Biology

A type I error is often called a false positive (an event that shows that a given condition is present when it is absent).

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#Id: 4836

#Unit 13. Methods in Biology

Example of type I error - In words of community tales, a person may see the bear when there is none (raising a false alarm) where the null hypothesis (H₀) contains the statement: “There is no bear”.

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#Id: 4837

#Unit 13. Methods in Biology

The type I error significance level or rate level is the probability of refusing the null hypothesis given that it is true.

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#Id: 4838

#Unit 13. Methods in Biology

It is represented by Greek letter α (alpha) and is also known as alpha level.