Suppose a 99 % confidence interval for mu turns out to be (1000 comma 2100). If this interval was based on a sample of size n equals 25 comma explain what assumptions are necessary for this interval to be valid.

Assumptions are mentioned below.

Step-by-step explanation:

It is provided that the 99 % confidence interval for μ is (1000, 2100).

Now it is assumed that the 99 % confidence interval for μ was based on a sample of size n = 25.

The assumptions necessary for the interval to be valid are:

The samples selected must be a simple random sample The population from which the samples are selected is approximately normally distributed. The variance is independent of the mean.