please help

[d1truth]

1. mortality follows demoivres law and E [T16] = 36 calculate Var (T16)


2. You are given the survival function Sx(X) = 1/9000 [9000-10x-x^2] calculate the central rate of failure at age 45.

 

[tkhunny]

Time for you to show some work.

Do you know DeMoivre's Law?
Do you know what a Central Failure Rate is?

What have you tried? How far have you gotten? Do you have a book? A teacher?

 

[happy]

Tk, I was about to say the same thing. Personally, I feel people who haven't made any attempt to solve the problem, should not be helped.