Proportions of unacceptable assemblies


Two teams of workers assemble automobile engines at the manufacturing plant in Michigan. A random sample of 145 assemblies from team 1 describes 15 unacceptable assemblies. A similar random sample of 125 assemblies from team 2 shows 8 unacceptable assemblies.

Is there sufficient evidence to conclude, at 10% significance level, that the two teams differ with respect to their proportions of unacceptable assemblies?

A. No, since the test value does not exceed the critical value

B. No, since the test value exceeds the critical value

C. No, since the p-value is less than 0.10

D. Yes, since the p-value is greater than 0.10

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Mathematics: Proportions of unacceptable assemblies
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