❵ ❵ ❵{ r chunk10 }
set.seed (234234)
x <- rnorm (100)
mean (x) 5 ❵❵❵
set. seed (234234)
x <- rnorm (100)
mean (x) ❵ ❵ ❵
{ r chunk20 , eval =F}
set.seed (234234)
x <- rnorm (100)
mean (x) 5 ❵❵❵ check. '1=1--'

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