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Statistics II

by: August Feeney

60

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2

Statistics II MTH 244

August Feeney
PCC
GPA 3.98

Staff

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COURSE
PROF.
Staff
TYPE
Class Notes
PAGES
2
WORDS
KARMA
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This 2 page Class Notes was uploaded by August Feeney on Monday October 19, 2015. The Class Notes belongs to MTH 244 at Portland Community College taught by Staff in Fall. Since its upload, it has received 60 views. For similar materials see /class/224654/mth-244-portland-community-college in Math at Portland Community College.

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Date Created: 10/19/15
Formulas Use when 6 is known Single population under study Single 2 test Single con dence interval H 0 i 0 w o 20 2 Z o X Z K 11 11645 2576 n Use when 6 is known Two populations under study Two sample ztest Two sample 2 con dence interval H 0 1M 2 Z Z X X i 039 039 Z 12 22 XI X2iZ 1 2 3 72 n1 n n2 2 Use when 6 is not known Single Population under study ttest Single t con dence interval H 0 i 0 gtlt t 39 0 Kinquot i JH With n 1 degrees of freedom df Use when 6 is not known Two populations under study Two sample t itest Two sample t con dence interval H 0 1M 2 s12 s22 With the lesser of n1 1 or n l for the 2 X1 X2 it degrees of freedom df 5 1 5 2 1 1 12 1 11 n2 Pooled Formulas 2 n1 1512 H2 1s s p n1n2 2 Estimating 6 by pooling the standard deviations from both populations Two sample ttest pooled s Two sample t con dence interval pooled s H0 1 2 X1 X2 l l s L i p n1 n2 P H1 1 12 1 96 95 2 as 95 cm mc 39J Pmpnmms swampnmm Sign cancelesv Ha Fain stnnEsumales Slrgle prwpnmnn wusm Ennfldence mum 2 2 N X2 N 7507 4 Z z 7 4 1 p n4 Viz n4 2m r m M m Twn mama undzx my Twn sample pmpnmnnsxm cance m Twn sample pmpmth snn cnn dence mm zr zv p20 p2 m 1 we5 Xxl 5232 n2Z nz m2 m2

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