{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

monfils 418_test 2 review-2

monfils 418_test 2 review-2 - Sta\$s\$cs and research design...

This preview shows pages 1–9. Sign up to view the full content.

Sta\$s\$cs’and’research’design’ Exam’2-’review

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

View Full Document
A’few’announcements’ Upcoming’exam’
Topics’covered:’ Correla\$on;’Regression’ Hypothesis’tes\$ng’ Z-test’ t-tests’ Confdence’intervals’

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

View Full Document
What’factors’aFect’our’decision’about’H 0 ?’ n Whether’we’reject’the’null’depends’on’ several’factors:’ 1. The’actual’obtained’diFerence’( X - μ ) 2. The’size’of’the’sample’variance’(s 2 )’ 3. The’sample’size’(N)’ 4. The’alpha’level’( α )’ 5. Whether’the’test’is’1-tailed’or’2-tailed
How’you’might’approach’problems:’ Informa\$on’extrac\$on’ Problem’iden\$Fca\$on’ Planning’(draw’a’sketch)’ Problem’solving’(calcula\$ons/decision)’

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

View Full Document
If’the’mean’of’your’sample’is’92,’and’the’standard’error’of’the’ mean’(of’the’popula\$on)’is’1.7,’with’a’degree’of’conFdence’of’ 99%,’what’is’the’interval’within’which’the’popula\$on’mean’ will’be?’
’ CI’=’X’±’ z(σ x )’ If’the’mean’of’your’sample’is’92,’and’the’standard’error’of’the’ mean’(of’the’popula\$on)’is’1.7,’with’a’degree’of’conFdence’of’ 99%,’what’is’the’interval’within’which’the’popula\$on’mean’ will’be?’

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

View Full Document
’ CI’=’X’±’ z(σ x )’ If’the’mean’of’your’sample’is’92,’and’the’standard’error’of’the’ mean’(of’the’popula\$on)’is’1.7,’with’a’degree’of’conFdence’of’
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}