Expression for endowment assurance

Discussion in 'CM1' started by Han, Jan 28, 2022.

  1. Han

    Han Member

    Hi,

    In an example from the online classroom lesson
    Recursive formulae for assurances and annuities, the following was written


    EA:64:<1>=vp_64+vq_64=v

    I have two questions regarding this:

    1. Does this imply that EA:x:<1>=v, for all x>0
    2. Since EA:x:<n>=TA:x:<n>+PA:x:<n>=vq_x +vp_x EA:x+1:<n-1>,
    this means that EA:x:<1>=vq_x +vp_x EA:x+1:<0>. Hence, given the expression shown in the lesson, would this imply that EA:x:<0>=1, for all x>0?


    Thanks in advance.
     
  2. Joe Hook

    Joe Hook ActEd Tutor Staff Member

    Hi,

    On your first point yes. As the contract enters it's final year payment is certain. 1 will be paid at the end of the year regardless of whether the life survives or dies and so the expected present value is v.

    On point two: You might be wise to refer to a pure endowment as PE in the exam but this is of course your choice. But yes EA:x:<0>=1. This is the expected present value of a contract which pays on death or survival to time 0 ie it pays 1 immediately. Hence no discounting or probabilities to allow for, EPV is just 1.

    Joe
     

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