# HW _8 - Solutions for HW#8 5 a The average heat output of...

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

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

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

Unformatted text preview: Solutions for HW#8 5. a. The average heat output of persons with syndrome is less than that of persons without syndrome minus 1. 2 2 2 2 1 2 ( 1.0) 0.64 2.05 1.0 2.899 0.2 0.4 10 10 x y z m n σ σ-- -- + = = = - + + <-2.33. Thus reject the null. b. P-value=0.0019 9. a. 19.9-13.7=6.2, Yes b. 1 2 1 2 : : a H H μ μ μ μ- =- ≠ 2 2 19.9 13.7 1.139 39.1 15.8 60 60 z-- = = + , P-value=2(0.1271)=0.2542. Thus do not reject the null. Yes, the result is different from the conjecture in a). 29. 1 2 1 2 : : a H H μ μ μ μ- =- 2 2 540 554 2.101 21 15 15 15 t-- = = - + 2 2 2 2 2 2 2 21 15 ( ) 15 15 25.33 25 (21 /15) (15 /15) 14 14 v + = = = + P-value=0.023. Thus reject the null at 5% level. There is an evidence that average compression strength of cola is higher than that of strawberry. Normal distribution assumptions. 34. a. / 2, 2 1 1 m n p x y t s m n α + -- ± ⋅ + b. 2 2 3(1.225 ) 3(1.010 ) 1 1 13.9 12.2 2.447 1.7 2.447(1.123)(0.707) 4 4 2 4 4 1.7 1.943 +- ± + = ± +- = ± c....
View Full Document

{[ snackBarMessage ]}

### Page1 / 3

HW _8 - Solutions for HW#8 5 a The average heat output of...

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

View Full Document
Ask a homework question - tutors are online