Bad eggs Selling eggs that are contaminated with salmonella can cause food poisoning in consumers. A large egg producer randomly selects 200 eggs from all the eggs shipped in one day. The laboratory reports that 9 of these eggs had salmonella contamination. Identify the population, the parameter, the sample, and the statistic.

A few rotten eggs Consumers may get food poisoning if they buy eggs that are tainted with salmonella. A huge egg producer chooses 200 eggs at random from all the eggs shipped in a single day. Salmonella was found in 9 of the eggs, according to the laboratory.

Individuals who are being examined make up the population.

All of the eggs were laid in one day.

The sample is the portion of the population from whom data was gathered.

200 eggs were randomly selected as a sample.

The parameter is a population descriptive measure.

The proportion of salmonella-infected eggs shipped that day is the parameter.

$\mathrm{P}=0.1\%=0.001$

A descriptive measure for a sample is the statistic.

The proportion of eggs in the sample that contain salmonella is a statistic.

$\hat{p}=\frac{9}{200}=0.045$