# Question: A study of the checkout lines at the Safeway Supermarket

A study of the checkout lines at the Safeway Supermarket in the South Strand area revealed that between 4 and 7 p.m. on weekdays there is an average of four customers waiting in line. What is the probability that you visit Safeway today during this period and find:

a. No customers are waiting?

b. Four customers are waiting?

c. Four or fewer are waiting?

d. Four or more are waiting?

a. No customers are waiting?

b. Four customers are waiting?

c. Four or fewer are waiting?

d. Four or more are waiting?

**View Solution:**## Answer to relevant Questions

An internal study by the Technology Services department at Lahey Electronics revealed company employees receive an average of two non-work-related e-mails per hour. Assume the arrival of these e-mails is approximated by the ...A recent CBS News survey reported that 67% of adults felt the U.S. Treasury should continue making pennies.Suppose we select a sample of 15 adults.a. How many of the 15 would we expect to indicate that the Treasury should ...The April rainfall in Flagstaff, Arizona, follows a uniform distribution between 0.5 and 3.00 inches.a. What are the values for a and b?b. What is the mean amount of rainfall for the month? What is the standard deviation?c. ...A normal distribution has a mean of 50 and a standard deviation of 4.a. Compute the probability of a value between 44.0 and 55.0.b. Compute the probability of a value greater than 55.0.c. Compute the probability of a value ...Dottieās Tax Service specializes in federal tax returns for professional clients, such as physicians, dentists, accountants, and lawyers. A recent audit by the IRS of the returns she prepared indicated that an error was ...Post your question