Hi.

I have a problem about sample size determination.

The population of interest is somewhat vague. What I know about the population is

Is it possible to determine a sample size estimating the population mean, so to speak, for a given Δ, to make (sample mean - Δ, sample mean + Δ) be a (1-α)% confidence level?

I have a problem about sample size determination.

The population of interest is somewhat vague. What I know about the population is

**only the population range R**, i.e, R = max value - min value in the population. I don't know the population distribution, also.Is it possible to determine a sample size estimating the population mean, so to speak, for a given Δ, to make (sample mean - Δ, sample mean + Δ) be a (1-α)% confidence level?

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