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Statistics 9 Online
OpenStudy (anonymous):

an adversity company plans to market a product to low income familiess. A study states that per a particular area the mean income per family is $34,569 and s.d is 72561. If the company plans to target the bottom 18% of the families based on income . Find the cut off income .

OpenStudy (anonymous):

inverse norm of the percent and plu into the z score equation

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