The time, in minutes, that a medicine for pain relief takes until it starts to have effect is a random variable X with density function

where ???? > 0 is the parameter of the distribution of X. Find (i) the distribution function F(t) and the probability P(a

b) for 0 (ii) the mean and variance of X.

Transcribed Image Text:

2(0-x) f(x) = 0 < x < 0, 02