Which of the following criteria are necessary conditions for making a statistical inference?

A. sample size greater than 30, or an approximately normal data set

B. sample size greater than 100

C. Convenince sample

D. simple random sample

E systematic sample

I think the correct answer from the choices listed above is option A. The criteria that is necessary conditions for making a statistical inference would be a sample size greater than 30, or an approximately normal data set. Statistical inference is the process of deducing properties of an underlying distribution by analysis of data.