Find the percentage of customers spent less than $20

Find the percentage of customers spent less than $20

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Reference no: EM1321066

Question: It is estimated that amounts of money spent on gasoline by customers at a gas station follow a normal distribution with a standard deviation of $2.50. It is also found that ten percent of all customers spent more than $25. Find the percentage of customers spent less than USD 20?

Reference no: EM1321066

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