Question

The formula to be used for the large sample is_________.

• A. $Z=\frac{\left|\overline{X}-\mu \right|}{\frac{\sigma }{\sqrt{n}}}$
• B. $Z=\frac{\left|X-\mu \right|}{\frac{\sqrt{{\sigma }^2}}{\sqrt{n}}}$
• C. $Z=\frac{\overline{X}-\mu }{\frac{\sqrt{\sigma }}{\sqrt{n}}}$
• D. Either (A) or (B)

Answer 1

The correct option is D Either (A) or (B)

Every researcher needs to answer the fact that how much sample is required for the correct estimation of whole population. So, the formula mentioned above can help in determining that sample.