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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 = 2.6, n = 37, x = 10.9.


(b) Calculate the value of z for Ho: μ = 120, σ = 26, n = 26, x = 125.2.


(c) Calculate the value of z for Ho: μ = 18.2, σ = 3.7, n = 144, x = 19.01.


(d) Calculate the value of z for Ho: μ = 81, σ = 13.2, n = 50, x = 79.4.

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iven- 10-9-10 2-6 31 : 0. (6 08 2 :. Test statiso tbh-120, σ. 26, η: 26, X=125.2, sbc, it ii given l25, 2-120 2626 -tod statak (z) !.ong oe Krow -lhat 19.01-18-2 3구 0.81(12) 3. = 2.627 toe Knoo that ラ子74-81 13.2 V50 そー -o. 856. 군-test StalistTC -O. 85

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