Question 1169444: If the probabilities that a cell phone technician will repair 5,6,7,8,9, or 10 or more cell phones on an ygiven day are: 0.12, 0.15, 0.15, 0.26, 0.13, 0.17,and 0.11, what is the probability that he will repair at least 7 cell phones on the following work day?
Found 2 solutions by Boreal, ikleyn:
Answer by Boreal(15235)   (Show Source):
You can put this solution on YOUR website! The probabilities given don't match:
There are 6 categories (5,6,7,8,9,10 or more) and 7 probabilities, which add to 1.09, not 1.00
Answer by ikleyn(52858)  (Show Source):
You can put this solution on YOUR website! .
This problem is posed INCORRECTLY and is NONSENSICAL.
Notice that the sum of the given "probabilities" is more than 1.
The right place for this "problem" is a TRASH BIN.
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