An old house in Fayetteville is inhabited by a variety of ghosts. Ghost ap- pear
ID: 2906809 • Letter: A
Question
An old house in Fayetteville is inhabited by a variety of ghosts. Ghost ap- pearances occur in the house according to a Poisson process having a rate of 1.2 ghosts per hour. A professor from Transylvania University has developed a device which can be used to detect ghost appearances. Suppose we began observing the facility at 8:00 am. It is now 1:00 PM and the last ghost appearance (5th overall) was at 12:45Pm. From this moment, how long on average (in hours) does it take for the 7th ghost to appear?
Explanation / Answer
as events are indepepednet and does not depend on prior events therefore expected amount of time it takes for the 7th ghost to appear =expected time for 2 gosts from now =2/1.2 Hour =1.67 Hours
( please revert for any clarificaton required)