The air in poultry-processing plants often contains fungus spores. Inadequate ventilation can affect the health of the workers. The problem is most...

224

The spore count is clearly higher in the kill room. Give sample means and a 99.5% confidence interval to estimate how much higher the spore count is in the kill room.

To do this problem correctly you need to think carefully about whether this is really a matched pairs design (one sample with two measurement) or a two sample design.