Normal distribution and a standard deviation, Basic Statistics

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Normal distribution and a standard deviation

A large charity receives monetary contributions of all sizes from individuals. Such donations from individuals average(u) 1480 per year. Suppose a normal distribution and a standard deviation( sigma) of 500. If the charity wants to have a recognition banquel for the top 15% of its contributors, what is the minimum annual contribution that would entitle an individual to be invited to the major-contributor banquet?

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Basic Statistics: Normal distribution and a standard deviation

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