Consider a group of people who have received treatment for a disease such as cancer. let be the survival time, the number of years a person lives after receiving treatment. the density function giving the distribution of is =−(t)=ce−ct for some positive constant , and the cumulative distribution function is =∫((t)=∫0tp(x)dx. think carefully about what the practical meaning of (t) is, being sure that you can put it into words. (a) the survival function, (t), is the probability that a randomly selected person survives for at least years. find a formula for (t). =s(t)=