Question

Assume that z is the test statistic. (Give your answers correct to two decimal places.) (a)...

Assume that z is the test statistic. (Give your answers correct to two decimal places.)

(a) Calculate the value of z for Ho: μ = 10, σ = 2.5, n = 39, x = 10.7.


(b) Calculate the value of z for Ho: μ = 120, σ = 30, n = 21, x = 126.2.


(c) Calculate the value of z for Ho: μ = 18.2, σ = 3.7, n = 145, x = 18.85.


(d) Calculate the value of z for Ho: μ = 81, σ = 12.9, n = 50, x = 79.1.

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