A study of all 33,043 infants with a heart rhythm abnormality in Italy was conducted to find a link between heart rhythm abnormality and sudden infant death syndrome. (Source: New England Journal of Medicine)

What is known about the 33,043 infants?

They are the population.

They are the variance.

They are a sample.

They are the stratified random sample.

samplingconcepts, it is found that the33,043 infantsrepresent thesample.## What is sampling?

sampleof this population, which is agroupcontaining elements of apopulation. A sample has to be representative of the population, that is, it has to involveall segmentsof the population.33,043 infantsrepresent thesample.samplingconcepts at https://brainly.com/question/25122507