How largo a sample is required to be 95 confident that, at least 85 of the distribution of measurements is included between the sample extremes ...

How largo a sample is required to be 95% confident that, at least 85% of the distribution

Question:

How largo a sample is required to be 95% confident that, at least 85% of the of measurements is included between the sample extremes?
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...