There's not enough information to solve this.
Answer is in a photo. I can only upload it to a file hosting service. link below!
bit.
ly/3a8Nt8n
<span>E[Y] = 0.4·1 + 0.3·2 + 0.2·3 + 0.1·4 = 2
E[1/Y] =0.4·1/1 + 0.3·1/2 + 0.2·1/3 + 0.1·1/4 = 0.4 + 0.15 + 0.0666 + 0.025?0.64
V[Y] =E[Y2]-E[Y]2= (0.4)·12+(0.3)·22+(0.2)·32+(0.1)·42-22= 0.4+1.2+1.8+1.6-4= 5-4 = 1</span>
The answer is -5 m. Sea level is 0. Add 14 to 0 and, then take 19 away from 14. Boom! You've got your answer.
Hope that helps! :D