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Compute the value of the test statistic for testing H0: μ = 30 vs. Ha: μ...

Compute the value of the test statistic for testing H0: μ = 30 vs. Ha: μ > 30, based on the information σ = 2.53, n = 32, LaTeX: \bar{x}x ¯= 30.2, s = 2.58.

a) 2.536

b) 0.439

c) 2.488

d) 0.447

e) 0.089

math   Statistics-And-Probability   
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Answer #1

Sol:

z=xbar-mu/sigma/sqrt(n)

xbar=30.2

sigma=2.53

n=32

mu=30

z=(30.2-30)/(2.53/sqrt(32)

z= 0.4471822

Z=0.447

ANSWER:

0.447

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