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STAT 2040
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Jeremy Balka
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Lecture 10

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University of Guelph

Statistics

STAT 2040

Jeremy Balka

Winter

Description

IC.I Introduction
an parts of
interest
a hypaties s tess to see if there 's
e in means of the 2
groups
ccreAden intervals
lots e sumursary storts s
drfes
San une
means be equal.
f observed differen
in sam ple menns is unlikety to occur if
pop
means are ewne, observed
differenu is statis
3
as esti tor fo
d fceren de
Sampling Dismibmaon of Difference n Sampe means
know that mean o
and
popmaak men, and
d
independent Rando
sampu-
distribution of
distr
an ee of
distr
o standard dewiato of samping distmo is
sd
are and pop menns a
e not
kee: H
s to
hypothesized wal
choice
3 a temetve hypotheses
f o
test Statishe is
uf null hypothesis true then steh have standard nor nal
distributio
a C
ve R for n
Cortidene Intervals for
Tests
hen
choice 2- options
an exacr proud we theat
Luires add Nae phen that
t proced
this
in
M2.an appro te t procedure often cauead the Welsh pro edere
o.t.I Pooled vanance Two -sampe t procedures
n ordw for be mid requires
ndepen
madan samples
Nor
distrib died pop uatons
h 3 Equal
Pop
IC.I Introduction an parts of interest a hypaties s tess to see if there 's e in means of the 2 groups ccreAden intervals lots e sumursary storts s drfes San une means be equal. f observed differen in sam ple menns is unlikety to occur if pop means are ewne, observed differenu is statis 3 as esti tor fo d fceren de Sampling Dismibmaon of Difference n Sampe means know that mean o and popmaak men, and d independent Rando sampu- distribution of distr an ee of distr o standard dewiato of samping distmo is sd are and pop menns a e not kee: H s to hypothesized wal choice 3 a temetve hypotheses f o test Statishe is uf null hypothesis true then steh have standard nor nal distributio a C ve R for n Cortidene Intervals for Tests hen choice 2- options an exacr proud we theat Luires add Nae phen that t proced this in M2.an appro te t procedure often cauead the Welsh pro edere o.t.I Pooled vanance Two -sampe t procedures n ordw for be mid requires ndepen mada

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