A population of values has a normal distribution with μ = 135.1 and σ = 20.9 . You intend to draw a random sample of size n = 170 . Find P8, which is the mean separating the bottom 8% means from the top 92% means.
Ans:
normal distribution with μ = 135.1 and σ = 20.9
P(Z<=z)=0.08
z=normsinv(0.08)
z=-1.405
P8=135.1-1.405*(20.9/sqrt(170))
P8=132.85
A population of values has a normal distribution with μ = 135.1 and σ = 20.9...
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