Answer:
The expected value for the insurance company is $392.20.
Step-by-step explanation:
The expected value of a random variable, <em>X</em> is:
![E(X)=x\cdot P(X)](https://tex.z-dn.net/?f=E%28X%29%3Dx%5Ccdot%20P%28X%29)
It is provided that a life insurance company sells a $100,000 one year term life insurance policy to a 30-year old male for $475.
The probability that the male survives the year is, P(S) = 0.999172.
Then the probability that the male does not survives the year is:
P (S') = 1 - P (S)
= 1 - 0.999172
P (S') = 0.000828
The amount the company owes the male if he survives is, S = $475.
The amount the company owes the male if he does not survives is,
S' = $475 - $100,000 = -$99525.
Compute the expected value for the insurance company as follows:
![E(\text{Insurance Company})=S\cdot P(S)+S'\cdot P(S')](https://tex.z-dn.net/?f=E%28%5Ctext%7BInsurance%20Company%7D%29%3DS%5Ccdot%20P%28S%29%2BS%27%5Ccdot%20P%28S%27%29)
![=(475\times 0.999172)+(-99525\times 0.000828)\\=474.6067-82.4067\\=392.20](https://tex.z-dn.net/?f=%3D%28475%5Ctimes%200.999172%29%2B%28-99525%5Ctimes%200.000828%29%5C%5C%3D474.6067-82.4067%5C%5C%3D392.20)
Thus, the expected value for the insurance company is $392.20.