Find minimum number of attendance days to receive discount

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"Overall the students' class attendance days (per year academic) is normally distributed around 180 days with a standard deviation of 15 days.

Students that are in the top 5% will receive a 20% off coupon at the "Crazy" cafeteria. What is the minimum number of attendance days that you should have in order to receive such discount?"

Reference no: EM13149353

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