Workshop on Sampling Distributions of the Variance and the Mean 2
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R-CODE
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3.
u = 505
n = 25
x_ = 508
s = 12.2
t = qt(0.05,n-1);t
tc = (x_ - u) / (s/sqrt(n)); tc
4.
round(pf(4.89,6,14),3)
5)
n = 18
p = 0.67
round(qt(p,n-1,lower.tail=T),3)
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