Question

Find the minimum sample size needed to be 99% confident that the sample's variance is within 30% of the population's variance.

Answer 1

The Minimum sample size table is attached below

Answer:

$X=173$

Step-by-step explanation:

From the question we are told that:

Confidence Interval $CI=99\%$

Variance $\sigma^2=30\%$

Generally going through the table the

Minimum sample size is

$X=173$