Inferential Statistics( Inclass Activity #17)

Null Hypothesis

States that the samples came form the same population

Type 1 Error

Occurs when you “Reject the H₀ and accept the H₁” when you should have “Failed to reject H₀”

Fisher’s Classical Decision Theory

Technique for deciding whether differ. in sample means represent differ. in population means

Exhaustive

Indicates that the options cover all possible outcomes

β (Beta)

Indicates the likelihood (or probability)of a Type 2 error

Alternative Hypothesis

States that the samples came from populations which have different means

Type 2 Error

Occurs if “ Fail to reject H₀” when you should have “Rejected the H₀, and accepted the H₁”

Mutually Exclusive

Indicates that only one option may be true

α (alpha)

Indicates the likelihood(or probability) of the Type 1 error

Statistically Significant Difference

Type of difference that is unlikely to occur due to chance(or sampling error)