The probability density function of evaporation $E$ on any day during a year in a watershed is given by $f(E)=\left\{\begin{array}{ll}\frac{1}{5} & 0 \leq E \leq 5 \mathrm{~mm} / \mathrm{day} \\ 0 & \text { otherwise }\end{array}\right.$ The probability that $E$ lies in between 2 and $4 \mathrm{~mm} /$ day in a day in the watershed is (in decimal)
The probability density function of evaporation $E$ on any day during a year in a watershed is given by $f(E)=\left\{\begin{array}{ll}\frac{1}{5} & 0 \leq E \leq 5 \mathrm{~mm} / \mathrm{day} \\ 0 & \text { otherwise }\end{array}\right.$ The probability that $E$ lies in between 2 and $4 \mathrm{~mm} /$ day in a day in the watershed is (in decimal)