Statistics Homework help... I'm stuck... again

Posted on 2013-12-03 14:18:00 in Statistics by GEMINI

Two questions! (they are connected)



1) "Find the “two tailed” confidence interval X? ? ? < µ < X? + ? with confidence level 99% for the mean given sample size n=100 and sample mean X? = 20 from a random variable with standard deviation ?x = 3.



__________ < µ < __________"



2) "Find the “one tailed” confidence interval X? ? ? < µ with confidence level 99% for the sample described in the previous problem.



__________________< µ."

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