Why is \[30\] statistically significant?

Hint: From the question we have been asked to explain that why is the number \[30\] statistically significant? To solve this kind of theoretical question we will take the help of statistics and its properties and explain why it is more significant in the concept of statistics. So, we proceed with our solution as follows.

Complete step by step answer:
Generally in the concept of statistics the term sample size is used to get the results more accurately.
In statistics, sample size means the number of observations we take from a population through which the statistical inferences for the whole population are made.
The accuracy will be more when we take more samples because it helps us to check the solution with more numbers of observations.
In statistics the sample size of \[30\] and less than \[30\] is considered to be the small sample. so, that the accuracy will be missing in the answer. if we take the sample size more than \[30\] then it is treated to be a large sample and the results would be better.

Hence, \[30\] is defined as the boundary for selecting the samples. This is the reason for considering \[30\] as a statistically significant number.

Note: Students should have good knowledge in the concept of statistics and its applications as well as properties. Students should know about the sample size in statistics. We should know when it is treated to be a large sample and when it is a small sample to solve this question.