Defective Glass Bottles Narrative
A manufacturing plant has two assembly lines for producing glass bottles. The plant manager was concerned about whether the proportion of defective bottles differs between the two lines. Two independent random samples were selected and the following summary data computed:
-Refer to Defective Glass Bottles Narrative. Find a 95% confidence interval for the true difference in proportion of defective bottles produced by the two assembly lines.

Question

Defective Glass Bottles Narrative
A manufacturing plant has two assembly lines for producing glass bottles. The plant manager was concerned about whether the proportion of defective bottles differs between the two lines. Two independent random samples were selected and the following summary data computed: 
-Refer to Defective Glass Bottles Narrative. Find a 95% confidence interval for the true difference in proportion of defective bottles produced by the two assembly lines.

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The Answer of Defective Glass Bottles Narrative
A manufacturing plant has two assembly lines for producing glass bottles. The plant manager was concerned about whether the proportion of defective bottles differs between the two lines. Two independent random samples were selected and the following summary data computed: 
-Refer to Defective Glass Bottles Narrative. Find a 95% confidence interval for the true difference in proportion of defective bottles produced by the two assembly lines.