Question

What will happen to the confidence interval obtained, if $500$ newborn elephants are weighed instead of $50$? Why ?

Short answer

As the sample size increases, there will be less variability in the mean and so the interval size decreases.

Step-by-step solution

Given Information 

If $500$newborn elephants are weighed instead of $50$.

Explanation

A tighter confidence interval with a smaller margin of error will arise from a bigger sample size or lower variability. A wider confidence interval with a larger margin of error will arise from a smaller sample size or higher variability. The interval width is also influenced by the level of confidence.