Share
The service times for customers coming through a checkout counter in a retail store are independent random variables with mean 1.5 min
Question
The service times for customers coming through a checkout counter in a retail
store are independent random variables with mean 1.5 minutes and variance 1.0.
Approximate the probability that 100 customers can be served in less than 2
hours of total service time.
in progress
0
Mathematics
3 years
2021-08-05T18:43:53+00:00
2021-08-05T18:43:53+00:00 1 Answers
117 views
0
Answers ( )
Answer:
38.2 %
Step-by-step explanation:
120/100 = 1.2 (average time)
(1.2 – 1.5)/1 = -.3
z table value for “-.3” is .3821