The probability density function of evaporation E on any day during a year in a watershed is given by f (E) = {\{\table \;{1}/{5}\;\;\;0 ≤ E ≤ 5\mm\/ \day ; 0\: \otherwise ; }.The probability that E lies in between 2 and 4 mm/day in a day in the watershed is (in decimal up to one decimal places) _____

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