Conduct a hypothesis test to prove the theorem

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Reference no: EM13247846

Two teams of workers assemble automobile engines at a manufacturing plant in Michigan. Quality control personnel inspect a random sample of the teams assemblies and judge each assembly to be acceptable or unacceptable. A random sample of 127 assemblies from team 1 shows 12 unacceptable assemblies. A similar random sample of 98 assemblies from team 2 shows 5 unacceptable assemblies. (15 pts)

Construct a 90% confidence interval for the difference between the portions of unacceptable assemblies generated by the two teams.

Based on a review of the confidence interval found in part a, is there sufficient evidence to conclude, at the 10% significance level, that the two teams differ with respect to their portions of unacceptable assemblies. Conduct a hypothesis test to prove this theorem

For which values of the differences between these two sample portions could you conclude that a statistically significant difference exists? (at a = .10 level)

Reference no: EM13247846

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