engineering recuitment Vizag Steel MT Mechanical 2020 Test Series Industrial Engineering Operations Research Queueing Theory
Arrivals at a telephone booth are considered to be poisson with an average of 15 minutes between one arrival and the next. The length of a phone call is assumed to be distributed exponentially with mean of 5 min. The probability that a person arriving at the booth will have to wait is ________ (in decimals)
1
0.33
2
0.50
3
0.66
4
0.25