Mathematics, 22.09.2021 21:00 rk193140

Trouble determining z-score. Given: sample mean = 56.7 , σ = 12.1, N = 500, and n = 47, find an 80% confidence to estimate Mu (the mean). I'm having trouble finding the z-score for an 80% confidence level.

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Trouble determining z-score. Given: sample mean = 56.7 , σ = 12.1, N = 500, and n = 47, find an 80...

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