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//Caption: Sample Size for Determining Sample Mean
//Example7.14
//Page219
clc;
Var = 64;// variance of axial length of pistons in mm
Std = sqrt(Var);
D = 2;// deviation from mean length in mm
alpha = 0.05;//significance level
alpha = alpha/2;
z = standard_normal_zstat(alpha)
n = (z*Std/D)^2;
disp(ceil(n),'Sample Size n =')
//Result
//Sample Size n =
//
// 62.
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