Question #138e2

1 Answer
Nallasivam V
Dec 21, 2015

#mu=barx+- t xx SE#

Explanation:

Confidence Interval -

#mu=barx+- t xx SE#

Where -

#mu=#Population Mean
#t=# Critical Value or Table Value [determined by confidence level and degrees of freedom and degrees of freedom depends on the size of the sample]
#SE=#Standard Error #(sigma/sqrt(n))#

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