=) Let X: {x, , X2,... Xn 3 be a rindom sample grom a mormal diseribution with mean M Gnd variance o that i (X; - «)* is i. I u is Enown and o is untnown , show o?. Show all a sufgicient Statistic the working steps. gor I1. I u and oé are both untnuwn show that X C the sample mean) and 5 C the sample veriance) are -) Now, let X: { X, , X2, jointly sufgicient gur u ünd o?. C. Ccod .... distci L. ti

MATLAB: An Introduction with Applications
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normal distribution with mean
1.ca) Let X: { X,, X2,... Xn} be a rindom sample grom a
e and variance o
in
i. I u is tnown and o is untnown, show that i (X; - «)
gur o. Show all the working steps.
Statistic
2
". I u and o?
are both untnown
show that X ( the sample mean) and S
( the sample veriance) are
X2,
distri bution. Consider the
jointly sug gicient
X25} be a random Sample from a NCu, 1)
gur u urd o?
u cind o?
(b) Now, let X:} X,
from a NCu,1)
...
te st
of :
Ho : M:4.0
VS. Hi: M: 3.0
that
regects
Ho
iç the sam ple mean is less thon
3.5
i. Calculate the size
the
test , your answer in
of
C the standord nor mal cumulative distribution
ex pressing
of $
terms
functi on)
ii. Colculate the power of
the test, ex pressing your Gnsuer
ini Caleulate the probability of
ype i
error
expressing your Gnswer
in ter ms of D
Transcribed Image Text:normal distribution with mean 1.ca) Let X: { X,, X2,... Xn} be a rindom sample grom a e and variance o in i. I u is tnown and o is untnown, show that i (X; - «) gur o. Show all the working steps. Statistic 2 ". I u and o? are both untnown show that X ( the sample mean) and S ( the sample veriance) are X2, distri bution. Consider the jointly sug gicient X25} be a random Sample from a NCu, 1) gur u urd o? u cind o? (b) Now, let X:} X, from a NCu,1) ... te st of : Ho : M:4.0 VS. Hi: M: 3.0 that regects Ho iç the sam ple mean is less thon 3.5 i. Calculate the size the test , your answer in of C the standord nor mal cumulative distribution ex pressing of $ terms functi on) ii. Colculate the power of the test, ex pressing your Gnsuer ini Caleulate the probability of ype i error expressing your Gnswer in ter ms of D
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