With the known values of a = 200,000 and b = 230,000, the first equation for the probability density function for the sales price of a home is found as follows.
f(x) = 1/b – a, a ≤ x ≤ b
= 1/230,000 − 200000, 200,000 ≤ x ≤ 230,000
= 1/30000, 200,000 ≤ x ≤ 230,000
Everywhere else, the probability density function will just be 0. Therefore, the full probability density function for the sales price of a home follows.
f(x) = _______________ 200,000 ≤ x ≤ 230,000
elsewhere