solution:-
given that mean = 70 , standard deviation = 1.6
(a)here given n = 64
E(X̄) = 70
σx = σ/sqrt(n) = 1.6/sqrt(64)
= 0.2
(b)here given n = 256
E(X̄) = 70
σx = σ/sqrt(n) = 1.6/sqrt(256)
= 0.1
(c) option c.
X̄ is more likely to be within 1 GPa of the mean in part (b). This is due to the decreased variability of X̄ that comes with a larger sample size
1. -11 points DevoreStat9 5.E.046. B MyNotes Ask Your Teacher Young's modulus is a quantitative measure...
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