stats_review_card_triola

05 0025 001 0005 critical value 1645 196 233 2575 s 3

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

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

Unformatted text preview: 1 x1 - x22 + E where E = ta>2 s2 1 HYPOTHESIS TEST: RIGHT-TAILED Significance Level A 0.05 0.025 0.01 0.005 Critical Value 1.645 1.96 2.33 2.575 • s unknown and n 7 30: use t If none of the above apply, use nonparametric method or bootstrapping. C n1 + s2 2 n2 C n1 where p = x1 + x2 n1 + n2 + df = smaller of n1 - 1 and n2 - 1. Alternative Cases for Two Independent Means: s2 s2 1 2 Known s1 and s2: E = za>2 + C n1 n2 If s1, s2 unknown but assumed equal, use pooled variance s2 : p 2 2 sp sp E = ta>2 C n1 + n2 where s2 = p 1n1 - 12s2 + 1n2 - 12s2 1 2 1n1 - 12 + 1n2 - 12 Wording of Conclusion Does original claim include equality? Yes Fail to reject H0 “There is not sufficient evidence to warrant rejection of the claim that … [original claim].” No “There is not sufficient evidence to support the claim that … [original claim].” and q = 1 - p N and p1 = x1 x2 N and p2 = n1 n2 HYPOTHESIS TEST: LEFT-TAILED Significance Level A 0.05 0.025 0.01 0.005 Critical Value 1.645 1.96 2.33 2.575 s = 2 g 3x # P1x24 - m 2 Expected value: E = g x # P1x2 Binomial Distribution: Requi...
View Full Document

This note was uploaded on 06/08/2010 for the course MATH 1123 taught by Professor Serpa during the Spring '10 term at Hawaii Pacific.

Ask a homework question - tutors are online