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BlastoiseBlue / STAT360 Public

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STAT360

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Notes 12-5.R

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9 lines (9 loc) · 159 Bytes

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STAT360

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Notes 12-5.R

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9 lines (9 loc) · 159 Bytes

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xbar=68690

n=35

sigma=9480

z=qnorm(0.975,0,1)

me=z*sigma/sqrt(n)

ci=c(xbar-me,xbar+me)

z.90=qnorm(0.95,0,1)

n.90=(z.90*sigma/2.5)^2

me.90=z.90*sigma/sqrt(n.90)

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