Question

(a) Using a calculator or computer, sketch graphs of the density function of the normal distribution p(z)--1-e-(7-a)2 / (20,2 (i) For fixed μ (say, μ-5) and varying σ (say, 1,2,3). σ (ii) For varying μ (say, μ 4,5,6) and fixed σ 1) (b) Explain how the graphs confirm that (say, σ is the mean of the distribution and that σ IS a measure of how closely the data is clustered around the mean.

Answer 1

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