Let x1 and x2 denote the proportions of time, out of one workweek, that employees i and ii, respectively, actually spend performing their assigned tasks. the joint relative frequency behavior of x1 and x2 is modeled by the pdf f(x1, x2) = ( x1 + x2 for 0 ≤ x1 ≤ 1, 0 ≤ x2 ≤ 1 ), 0 otherwisea). find cov(x1, x2).b). find e(3x1 − 2x2).c). find v (3x1 − 2x2).

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whole numbers.

step-by-step explanation:

we are given the average monthly rainfall (in millimeters) model r(m) for the years 1900-2009 as a function of the month number m.

as we can see m is taken for the number of months for years 1900-2009.

we know that number of months can't be a negative number or decimal number or a fraction.

so, the number of months could be only positive whole numbers.

therefore, whole numbers is more appropriate for the domain of r.

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so

step-by-step explanation:

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