Statistics for Maintenance Modelling: Continuous Lifetime Distributions 1

# Question 1¤

What is the probability of a 3 year old item failing in the next year? Click on one of the options below, then click on "Check Answer".

R(3) - R(4)
h(3)
None of these
Yes, that's right. The fraction of all items that fail between the start of year 3 and the start of year 4 is = F(4) - F(3). However only R(3) items make it to the start of year 3, hence
F(4) - F(3) has to be increased to take this into account.
No, that's not right. The fraction of all items that fail between the start of year 3 and the start of year 4 is = F(4) - F(3). However only R(3) items make it to the start of year 3, hence
F(4) - F(3) has to be increased to take this into account.