# Use the following information to calculate (a) M and (b) z. M = 15, = 21, = 1.5, and N = 63.

Use the following information to calculate

(a) σ_{M} and

(b) z. M = 15, μ = 21, σ = 1.5, and N = 63.

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**6**Section: Exercises

Problem: 88

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