A study has shown that the probability distribution of x, the numbers of customers in line(including the one being served, if any) at a checkout line counter in a dept store, is given by P(X=0)=0.25, P(X=1)=.25, P(X=2)=.20, P(X=3)=.20, and P(X≥4)=.10 . Consider a newly arriving customer to the checkout line.

a) What is the probablility that this customer will not have to wait behind anyone?

b) What is the probability that this customer will have to whit behind at least one customer?

c) On average, behind how many other customers will the newly arriving customer have to wait?

a) What is the probablility that this customer will not have to wait behind anyone?

b) What is the probability that this customer will have to whit behind at least one customer?

c) On average, behind how many other customers will the newly arriving customer have to wait?

### Recently Asked Questions

- Part #1 Satellites and Weather Radar Matching Answer the following questions by selecting from the list below: Infrared Satellite Imagery Visible Satellite

- Please correct my Grammar and words choice. The "Ghent Altarpiece" consists of 24 panels in which twelve opening panels and twelve closing panels. The whole

- White Corporation is a calendar-year taxpayer. Wilhelmina owns all of its stock. Her basis for the stock is $25,000. On March 1 of the current year (not a leap