Confidence Interval Homework

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What is the formula for the length of an interval when doing Confidence interval?

Oct 20th, 2014


x bar ± Z (s/√n)

where:

x bar: mean of the sample

Z: z constant value for the chose confidence interval

    (for 95 % confidence levels, Z = 1.96)

s: standard deviation of the sample

n: sample size

Oct 21st, 2014

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Oct 20th, 2014
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Oct 20th, 2014
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