Answer
When M=30, s = 8,
X=32, z = $\frac{X-M}{s}$ = $\frac{32-30}{8}$ = 0.25
X=34, z = $\frac{X-M}{s}$ = $\frac{34-30}{8}$ = $\frac{4}{8}$ = 0.5
X=36, z = $\frac{X-M}{s}$ = $\frac{36-30}{8}$ = $\frac{6}{8}$ = 0.75
X=28, z = $\frac{X-M}{s}$ = $\frac{28-30}{8}$ = $\frac{-2}{8}$ = -0.25
X=20, z = $\frac{X-M}{s}$ = $\frac{20-30}{8} $ = $\frac{-10}{8}$ = -1.25
X=18, z = $\frac{X-M}{s}$ = $\frac{18-30}{8} $ = $\frac{-12}{8}$ = -1.5
Work Step by Step
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