The newsstand at the corner of Bloor and Yonge finds that the number of papers sold each

Question:

The newsstand at the corner of Bloor and Yonge finds that the number of papers sold each day follows a normal probability distribution with a mean of 900 copies and a standard deviation of 150 copies. How many copies should the owner of the newsstand order so that he only runs out of papers on 20% of the days?

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...

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