Example Null Students in this course, EDUR 8131, will have an age the same as the age at GSU of 24.5. Symbolic null Ho: µ = 24.5 Written null There will be no difference in age between students in this course and the mean age of all students at GSU (µ = 24.5, = 9.8). σ Alternative, Non-directional Symbolic Ha: µ value” (e.g., Ha: µ 16 oz) ≠ “some ≠ Written There will be a difference between the sample mean and value” “some Example Non-directional Symbolic null Ha: µ 24.5 ≠ Written null There will be a difference in age between students in this course and the mean age of all students at GSU (µ = 24.5, = 9.8). σ b. Formula (one sample z-test) Note, do not confuse the above with a Z score Example from this course: Reported ages Student Age 1 41 2 43 3 52
Example Null Students in this course, EDUR 8131, will have an age the same as the age at GSU of 24.5. Symbolic null Ho: µ = 24.5 Written null There will be no difference in age between students in this course and the mean age of all students at GSU (µ = 24.5, σ = 9.8). Alternative, Non-directional Symbolic Ha: µ ≠ “some value” (e.g., Ha: µ ≠ 16 oz) Written There will be a difference between the sample mean and “some value” Example Non-directional Symbolic null Ha: µ ≠ 24.5 Written null There will be a difference in age between students in this course and the mean age of all students at GSU (µ = 24.5, σ = 9.8). b. Formula (one sample z-test) Note, do not confuse the above with a Z score Example from this course: Reported ages Student Age 1 41 2 43 3 52
EDUR8131Chat05-Notes4.docx