Explain why it is important to use samples for studies, but not the population.
Explain why it is important to have a representative sample.
Explain, if there a chance that the real population mean is not part of your confidence interval.
Explain why it is important to use samples for studies, but not the population.
Explain why it is important to have a representative sample.
Explain, if there a chance that the real population mean is not part of your confidence interval.