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Compute the value of the test statistic z

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Reference no: EM132402488

A test is made of H0: =μ 20 versus H1: ≠ μ 20. A sample of size n = 55 is drawn, and x = 18. The population standard deviation is σ = 8

(a) Compute the value of the test statistic z.

(b) Is H0 rejected at the α = 0.10 level?

(c) Is H0 rejected at the α = 0.05 level?

Reference no: EM132402488

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