## Answers

Sel b confidence interval (1800, 1990) (1) Sample mean lower bound upper bound + x = Q 1990 +1800 L 1895 (2) Margin of Error, e upper bound - lower bound E = 2 1990 - 1800 95 2 (3) Sample slandard deviation, s = -0.95 20-05 df = n-1= 21-1 = 20 tapi affa te S 2.086 to.025, 20 E = 5 h 2.086* 95 alles S = Jo 95*Jai 22.086 208.6923 ICS canned with CamScanner

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