Given below are two statements:
Statement I: If a population from which a sample is to be drawn does not constitute a homogenous group, stratified sampling technique is generally applied in order to obtain a representative sample.
Statement II: In the case of small samples, z-test is applied even if the population standard deviation is not available (given).
In the light of the above statements, choose the most appropriate answer from the options given below:
1
Both Statement I and Statement II are correct.
2
Both Statement I and Statement II are incorrect.
3
Statement I is correct but Statement II is incorrect.
4
Statement I is incorrect but Statement II is correct.