Marty's barber shop has one barber. customers have an arrival rate of 2.2 customers per hour, and haircuts are given with a service rate of 5 per hour. use the poisson arrivals and exponential service times model to answer the following questions: what is the probability that one customer is receiving a haircut and one customer is waiting? what is the probability that one customer is receiving a haircut and two customers are waiting? what is the probability that more than two customers are waiting?

Two variables, x and y, vary inversely, and x=12 when y=4. what is the value of y when x=3?

Which will form a composite function?

Mariah is randomly choosing three books to read from the following: 5 mysteries, 7 biographies, and 8 science fiction novels. which of these statements are true? check all that apply. there are 20c3 possible ways to choose three books to read. there are 5c3 possible ways to choose three mysteries to read. there are 15c3 possible ways to choose three books that are not all mysteries. the probability that mariah will choose 3 mysteries can be expressed as . the probability that mariah will not choose all mysteries can be expressed as 1 −