10.2.20
The p value is more than alpha which means we would fail to reject the null hypothesis.
10.3.24
a. Since the p value is less than alpha we would reject the null hypothesis in favor of the alternative hypothesis. Thus based on the results we can say that the assembly line should be shut down so that the machine can be recaliberated. In testing also, we accepted the fact that true average is not 64.05.
b. The level of significance of alpha equal to 0.01 is more reasonable than 0.1 because in such a precise situation risk higher than 1% would be detrimental.
10.4.10
The is less variability in the filling machine given that the p value is so large and close to 1.
One sample proportion summary hypothesis test:p : Proportion of successes H_{0} : p = 0.38 H_{A} : p > 0.38 Hypothesis test results:

One sample T hypothesis test:μ : Mean of variable H_{0} : μ = 64.05 H_{A} : μ ≠ 64.05 Hypothesis test results:

One sample variance summary hypothesis test:σ^{2} : Variance of population H_{0} : σ^{2} = 0.1764 H_{A} : σ^{2} < 0.1764 Hypothesis test results:

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