Question:

Need math gebius on this problem statistics tnx?

by  |  earlier

0 LIKES UnLike

2.An insurance company affers its policyholders a number of different premium payment options. For a randomly selected policyholder, let X be the number of months between sucessive payments. The cumulative distribution function of X is

F(x)= {0, if x<1,

0.4, if 1<=x<3,

0.6, if3<=x<5,

0.8, if5<=x<7,

1.0, ifx>=7.

a. What is the probability mass function of X?

b. Compute P(4<X<=7)

 Tags:

   Report

1 ANSWERS


  1. a. probability mass function

    f(x) x

    0.4 1

    0.2 3

    0.2 5

    0.2 7

    b. P(4&lt;X&lt;=7) = 0.2 +0.2 = 0.4

    Why??

    f(x) is probability; f(5) = 0.2, f(7) = 0.2

Question Stats

Latest activity: earlier.
This question has 1 answers.

BECOME A GUIDE

Share your knowledge and help people by answering questions.
Unanswered Questions