"A study of long distance phone calls made from the corporate offices of the Pepsi Bottling Group Inc. showed the calls follow the normal distribution. The mean length of time per call was 4.2 minutes and the standard deviation was 0.60 minutes.
a.What is the probability the calls lasted...
"An internal study at Lahey Electronics,a large software development company,revealed the mean time for an internal email message to arrive at its destination was two seconds. Further, the distribution of the arrival times followed a Poisson distribution.
a.What is the probability a message...
"The computer systems department has eight faculty, six of whom are tenured. Dr. Vonder, the chairman, wants to establish a committee of three department faculty members to review the cur- riculum. If she selects the committee at random:
a. What is the probability all members of the committee...
"It is reported that 16 percent of American households use a cell phone exclusively for their tele- phone service. In a sample of eight households, find the probability that:
a. None use a cell phone as their exclusive service.
b. At least one uses the cell exclusively.
c. At least five use...