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

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

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