In 2007, Consumer Report published a report of bacterial
contamination of chicken sold in the US. They purchased 523 broiler
chickens from various kinds of food stores, and tested them for
bacteria that causes food-borne illnesses. Results indicated that
83% of chickens were infected with Campylobacter.
1. Construct a 95% confidence interval.
2. Explain what your confidence interval says about chicken sold
in the US.
3. A spokesperson for the US Department of Agriculture dismissed
the report, saying, “That’s 500...