Quiz 3 Key - .327 C = 1 .2 1 4 5 1 (.2) (.8) .4096 C = 2 .4...

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

View Full Document Right Arrow Icon
Quiz3 (3/18/2010) 1. 2 2 ( ) ( ) ~ ( , ), 40, 12, 36 12 ~ (40, ) (40,(2) ) 36 36 40 ( ) ( 36) ( ) ( 2) ( 2) .9772 2 ( ) X X a By the Central Limit Theorm n is large and no assumption about normality of population X Normal n n X Normal Normal X b P X P P Z P Z c P σ μ = = = = - - = = - = < = .05 30 40 ( 30) ( ) ( 5) ( 5) 0 2 40 40 ( ) .05 ( ) ( ) ( ) 2 2 40 1.64 1.65. (1.64) (2) 40 43.28 2 X X X X X X P P Z P Z X k k d P X k P P Z k z or k - - < = < = < - = - - - = = = - =∴ = = =∴ = + = 2. .2, 5, # " " ˆ / p n X of the individuals has superior distance vision p X n = = = = a) X ˆ / P X n = ˆ ˆ ( ) P P p = 0 0 0 5 5 0 (.2) (.8)
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: .327 C = 1 .2 1 4 5 1 (.2) (.8) .4096 C = 2 .4 2 3 5 2 (.2) (.8) .2048 C = 3 .6 3 2 5 3 (.2) (.8) .0512 C = 4 .8 4 1 5 4 (.2) (.8) .0064 C = 5 1 5 5 5 (.2) (.8) .00032 C = b) P( p =0)=.327 c) P(.1&lt; p .4)= P( p =.2)+ P( p =.4)=.4096+.2048=.6144...
View Full Document

Ask a homework question - tutors are online