The competitive advantage of small American factories such as Tolerance Contract Manufacturing lies in their ability to produce parts with highly narrow requirements, or tolerances, that are typical...


The competitive advantage of small American factories such as Tolerance Contract Manufacturing lies in their ability to produce parts with highly narrow requirements, or tolerances, that are typical in the aerospace industry. Consider a product with specifications that call for a maximum variance in the lengths of the parts of 0.0008. Suppose the sample variance for 30 parts turns out to be s2 = 0.0009.
Use ? = 0.05 to test whether the population variance specification is being violated.

State the null and alternative hypotheses.



H0: σ2 ≥ 0.0008

Ha: σ2 <>


H0: σ2 ≤ 0.0008

Ha: σ2 > 0.0008

H0: σ2 <>

Ha: σ2 ≥ 0.0008


H0: σ2 > 0.0008

Ha: σ2 ≤ 0.0008


H0: σ2 = 0.0008

Ha: σ2 ≠ 0.0008




Find the value of the test statistic.

(           )


Find thep-value. (Round your answer to four decimal places.)


p-value =


State your conclusion.


Do not rejectH
0. The sample does support the conclusion that the population variance specification is being violated.

RejectH
0. The sample does support the conclusion that the population variance specification is being violated.

Do not rejectH
0. The sample does not support the conclusion that the population variance specification is being violated.

RejectH
0. The sample does not support the conclusion that the population variance specification is being violated.



Jun 03, 2022
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