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 = 51, σ = 4.3, n = 43, x = 49.2.

(b) Calculate the value of z for Ho: μ = 20, σ = 4.2, n = 79, x = 20.8.

(c) Calculate the value of z for Ho: μ = 138.5, σ = 3.5, n = 12, x = 144.08.

(d) Calculate the value of z for Ho: μ = 815, σ = 42.9, n = 59, x = 800.3.

You may need to use the appropriate table in Appendix B to answer this question.

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