If a random sample of size nequals=6 is taken from a population, what is required in order to say that the sampling distribution of x overbarx is approximately normal?

In order to satisfy this distribution we need that each observation on this case comes from a normal distribution, because since the sample size is not large enough we can't apply the central limit theorem.

Step-by-step explanation:

For this case we have that the sample size is n =6

The sample man is defined as :

And we want a normal distribution for the sample mean

In order to satisfy this distribution we need that each observation on this case comes from a normal distribution, because since the sample size is not large enough we can't apply the central limit theorem.

So for this case we need to satisfy the following condition:

Because if we find the parameters we got:

And the deviation would be:

And we satisfy the condition:

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