Mathematics, 25.10.2019 03:43 steliosceltics2541
In a popular tale of wizards and witches, a group of them finds themselves in a room with unmarked doors which change position, making it impossible to determine which door is which when the room is entered or reentered. suppose that there are 4 doors in the room. one door leads out of the building after 3 hours of travel. the second and third doors return to the room after 3.5 and 5 hours of travel, respectively. the fourth door leads to a dead end, the end of which is a 2.5 hour trip from the door. if the probabilities with which the group selects the doors are 0.2, 0.1, 0.2, and 0.5, respectively, what is the expected number of hours before the the group exits the building? e[number of hours]=
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In a popular tale of wizards and witches, a group of them finds themselves in a room with unmarked d...
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