9.2: Type I and Type II Errors - Statistics LibreTexts
https://stats.libretexts.org/Courses/City_University_of_New_York/Introductory_Statistics_with_Probability_(CUNY)/09%3A_Hypothesis_Testing_for_a_Single_Variable_and_Population/9.02%3A_Type_I_and_Type_II_Errors
WebType I error: Frank thinks that his rock climbing equipment may not be safe when, in fact, it really is safe. Type II error: Frank thinks that his rock climbing equipment may be safe when, in fact, it is not safe. α = α = probability that Frank thinks his rock climbing equipment may not be safe when, in fact, it really is safe.
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