Inferences on Two Populations

# Measurements g baker department of statistics g

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ements are average measurements more than 0.10 greater than operator 1’s more measurements. measurements. G. Baker, Department of Statistics G. University of South Carolina; Slide 27 Difference Between Independent Means, Difference µ1 - µ2 Equal variances: y1 − y2 ± tα / 2 s p 11 + n1 n2 ( y1 − y2 ) − ( µ1 − µ 2 ) 0 t= 11 sp + n1 n2 2 2 (n1 − 1) s1 + (n2 − 1) s2 sp = n1 + n2 − 2 Unequal variances: y1 − y2 ± tα / 2 2 1 2 2 s s + n1 n2 t df = ( y1 − y2 ) − (µ1 − µ 2 )0 2 s12 s2 + n1 n2 G. Baker, Department of Statistics G. University of South Carolina; Slide 28 Difference between dependent samples, µD Difference y D ± tα / 2 sD nD y D − D0 t nD −1 = s D / nD G. Baker, Department of Statistics G. University of South Carolina; Slide 29...
View Full Document

## This note was uploaded on 01/12/2014 for the course STA 509 taught by Professor Wang during the Fall '13 term at South Carolina.

Ask a homework question - tutors are online