Sol:
z=xbar-mu/sigma/sqrt(n)
=(54-56)/(5.6/sqrt(36)
Z=-2.14
p=NORM.S.DIST(-2.14;TRUE)
=0.016177
p<0.05
Reject H0
z=-2.14<zc=-1.64
MARK OPTION D
Page 3 of 7 A sample mean, sample size, and population standard deviation are given. Use...
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A random sample from normal population yielded sample mean=40.8 and sample standard deviation= 6.1, n = 15. H0: μ = 32.6, Ha: μ ≠ 32.6, α = 0.05. Perform the hypothesis test and draw your conclusion. A. Test statistic: t = 5.21. P-value=0.00013. Reject H0. There is sufficient evidence to support the claim that the mean is different from 32.6. B. Test statistic: t = 5.21. P-value=1.9E-7 (0.00000019). Reject H0. There is sufficient evidence to support the claim that the...
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