Question

1. f the distribution of the population is not severely nonnormal, at what minimum sample size with the central limit theorem apply?

   		60
   		100
   		90
   		30

Question 3

1. What are two fundamental point estimates that we use?

   		Sample Mean, correlate
   		Sample Variance, regressor
   		Sample Mean, regressor
   		Sample Mean, sample variance

Answer 1

1.

If the population is non distributed then the sample size at least 30 is sufficient for apply CLT because it is approximately shows the data or distribution is normally distributed.

Therefore 4th option is correct.

2.

In the fundamental point statistics, the 5 basic concepts are mostly used, they are population, sample, static, parameter and variable. i.e. Sample mean and sample variance are two estimates in fundamental statistics.
And regressor and correlate we use for showing relation so they are not fundamental estimates.
Therefore 4th option is correct.