Between 2 a m and 4 a m at an all night pizza
Between 2 a.m. and 4 a.m. at an all-night pizza parlor, the mean time between arrival of telephone pizza orders is 20 minutes.
(a) Find the median wait for pizza order arrivals.
(b) Explain why the median is not equal to the mean.
(c) Find the upper quartile.
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