# 6.1 - Assignment 6.1 Calculate a 95 Confidence Interval for...

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Assignment 6.1 Calculate a 95% Confidence Interval for the following samples: =400, N=200, σ=100 plugintotheformula = 1.96 x 100 200 = 13.86 →then compute 400 13.86 400 + 13.86 ( 413.86,386.14 ) is your confidence interval =125, N=50, σ=15 plugintotheformula = 1.96 x 15 50 = 4.16 →thencompute 125 4.16 125 + 4.16 ( 120.84,129.16 ) is your confidenceinterval = 19, N = 17, s = 5 plugintothe formula = 1.96 x 5 17 = 2.38 →then compute 19 2.38 19 + 2.38 ( 16.62,21.38 ) is your confidenceinterval = 8, N = 40, s = 1.6 plugintothe formula = 1.96 x 1.6 40 = .50 →then compute 8 .50 8 + .50 ( 7.50,8.50 ) is your confidenceinterval = 8.35, N = 30, s = 1.59 plugintotheformula = 1.96 x 1.59 30 = .57 →then compute 8.35 .57 8.35 + .57 ( 7.78,8.92 ) is your confidenceinterval Calculate a 99% Confidence Interval for the following samples: =550, N=110, σ=100 plugintothe formula = 2.58 x 100

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• Fall '13
• Harshad number, Interval finite element

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