An automotive part must be machined to close tolerances to be acceptable to customers. Production specifications...

An automotive part must be machined to close tolerances to be acceptable to customers. Production specifications call for a maximum variance in the lengths of the parts of 0.0006. Suppose the sample variance for 40 parts turns out to be s² = 0.0007. Use α = 0.1 to test whether the population variance specification is being violated.

Select one:

a. Test statistic = 51.39, reject H₀

b. Test statistic = 51.39, can't reject H₀

c. Test statistic = 45.5, reject H₀

d. Test statistic = 45.5, can't reject H₀

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Expert Solution

orchestra answered 1 year ago

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