At what average rate must a clerk in a supermarket work in order to ensure a probability of 0 90 - Maths - Probability

Question

At what average rate must a clerk in a supermarket work in order to
ensure a probability of 0 90 that the customer will not wait longer
than 12 minutes? It is assumed that there is only one counter at
which customers arrive in a poisson fashion at an average rate of
15 per hour and that the length of the service by the clerk has an
exponential distribution

Atul Shaw · Accepted Answer

Dear student,
The question seems to be of higher grade which requires basic
knowledge of probability
Thus, I request you to recheck the question and use proper tagging
it is a question of higher
grade So, I am provide you with meaningful help Looking forward to
hear from you soon
Regards