One floor of a dollhouse is 1.6 feet tall. the dollhouse contains two levels of living areas and an attic for a total of 2.5 floors. jaime estimates the height of the dollhouse by computing 2×3. how does her estimate compare to the actual height of the dollhouse?

The random variable x has probability density function f (x) = k(−x²+5x−4) 1 ≤ x ≤ 4 or =0 1 show that k = 2/9 find 2 e(x), 3 the mode of x, 4 the cumulative distribution function f(x) for all x. 5 evaluate p(x ≤ 2.5). 6 deduce the value of the median and comment on the shape of the distribution.