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Determine the 80​% confidence interval estimate for the population mean of a normal distribution given n=100​, σ=101​,...

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Statistics

Determine the 80​% confidence interval estimate for thepopulation mean of a normal distribution given

n=100​, σ=101​, and x (with line over it)=1,200.

a. The 80% confidence interval for the population mean is from_____ to _______.

!!!!!!!!PLEASE SHOW ME HOW TO SOLVE THIS ON EXCEL OR A TI-84CALCULATOR!!!!!

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