Statistics for Maintenance Modelling: Continuous Lifetime Distributions 1

# Reliability and Hazard Functions¤

Let T be the time before an item fails and f(T) be the failure probability density function (pdf) of T, i.e. the probability of T being within a particular interval of values. For instance, the probability of an item failing between times a and b is .

A domestic iron has the failure probability density function: where t is measured in years. The plot of this density function is shown on the right. |