{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

Dif in Means -- Known Sigmas

# Dif in Means -- Known Sigmas - DIFFERENCE IN POPULATION...

This preview shows pages 1–2. Sign up to view the full content.

DIFFERENCE IN POPULATION MEANS WITH KNOWN VARIANCES Test: H 0 : μ 1 - μ 2 = 5 H 1 : μ 1 - μ 2 > 5 Known: σ 1 = 10 and σ 2 = 15; n 1 = 100 and n 2 = 75 (Data in A2:A101 and B2:B76) Go to Tools Select Data Analysis Select z-Test: Two Sample for Means Hypothesized Mean Difference: H 1 : μ 1 - μ 2 > 5 Variances, NOT St’d Dev.’s (10) 2 = 100 (15) 2 = 225

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
2 2 2 1 2 1 025 . 2 1 ) ( n n z x x σ σ + - - CONFIDENCE INTERVAL FOR : μ 1 - μ 2 The lower confidence limit (LCL) for the 95% interval is: The upper confidence limit (UCL) for the 95% interval is The same except the “-“ sign is replaced with a “+” sign.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### Page1 / 2

Dif in Means -- Known Sigmas - DIFFERENCE IN POPULATION...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online