Week 12:Inferential Statistics Error MatrixCorrect DecisionType
I Error:False PositiveType II Error:False NegativeCorrect
DecisionNull is trueNull is falseThe TruthOur ChoiceReject
NullRetain NullDatingType I Error:False PositiveCorrect
DecisionNull is CorrectNull is FalseReject NullThe TruthNull: I do
not have a faithful partner.Alternative: I do havea faithful
partner.
Milk?Type I Error:False PositiveCorrect DecisionNull is
CorrectNull is FalseReject NullThe TruthNull: I should notdrink
milk now.Alternative: I should drink milk now.
Q: Does level of inebriation (< .08, > .08) and type of
alcohol (Tequila, Whiskey) affect sexual performance? Null
Hypotheses:LOI does not affect sexual performance (both levels will
have equal performance)TOA does not affect sexual performance (both
types will have equal performance)Alternative Hypotheses:LOI
affects performance (low inebriation better performance)TOA affects
performance (tequila better performance)Test ? Two-Way
Between-Subjects ANOVAor 2 separate independent samples
t-testsExample Study6I need more shots (< .08)I NEED MORE
SHOTS!! (> .08)6771626152111Oh234567WOWZA
7Q: Does level of inebriation (< .08, > .08) affect sexual
performance? Stat: F(1,8) = 6.11, p = .04Reject or Fail to Reject
H0?p < .05 so reject H0Conclude: Level of inebriation affects
sexual performance, such that being too turnt leads to a regretful
night.
Level of Inebriation8How do we know which type is better? We
look at the means to see which music group has the higher test
score.Q: Does type of alcohol (tequila, whiskey) affect sexual
performance? Stat: F(1,8) = 3.70, p = .09Reject or Fail to Reject
H0?p > .05 so retain H0Conclude: The type of alcohol consumed
has no significant effect on sexual performance; however, there is
a trend suggesting that whiskey may be the devils drink.
Type of Alcohol9How do we know which type is better? We look at
the means to see which music group has the higher test
score.HomeworkDue in two weeks in lecture 11/18:Descriptive
Statistics Activity: LM 31-32Inferential Statistics Activity: LM
34-39Learning Check Extra Credit Activity: LM 44-47
![A First Look at ML · val it = false : bool - true false; val it = true : bool - 1.3 = 1.3; Error: operator and operand don't agree [equality type required] operator domain:](https://img.pdfslide.us/doc/110x75/5f9fb578fc036d2dac25ba36/a-first-look-at-ml-val-it-false-bool-true-false-val-it-true-bool-13.jpg)
