Statistics : Type I

Study concepts, example questions & explanations for Statistics

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Example Questions

Example Question #1 : Type I

Type I errors occur when a researcher incorrectly __________ the ___________ hypothesis; therefore, they erroneously accept the __________ hypothesis.  

Possible Answers:

accepts. . . alternative. . . null

accepts. . . null. . . alternative

rejects. . . null. . . alternative

None of these

rejects. . . alternative. . . null

Correct answer:

rejects. . . null. . . alternative


Type I errors are made when a researcher incorrectly rejects the null hypothesis and erroneously  accepts the alternative hypothesis. For example, a researcher may incorrectly conclude that two plant treatments are different by erroneously rejecting the null hypothesis. As a result they may assume that they have differing effects when they are—in fact— the same. 

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