13. The mean time waiting for a stop light to turn green is 4 minutes with a standard deviation of 0.75 minutes. i. What is the probability that a randomly selected car will wait less than 3.5 minutes? What is the probability that a randomly selected sample of 10 cars will have a mean wait time less than 3.5 minutes?
13. The mean time waiting for a stop light to turn green is 4 minutes with...
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the standard deviation of the waiting time is 3 minutes. Find the probability that a person will wait for less than 7 minutes. Round your answer to four decimal places.
bution The time required to fill a prescription at a local pharmacy is at is normally distributed with a mean of 10 minutes and a standard deviation of 2 minutes. a. What is the probability that a randomly selected customer experiences a wait-time of less than 5 minutes? b. Find the wait time that defines the upper 1 percent.
bution The time required to fill a prescription at a local pharmacy is at is normally distributed with a mean of...
The population mean waiting time to check out of a supermarket has been known 10.73 minutes with standard deviation of 5.8 minutes. Recently, in an effort to reduce the waiting time, the supermarket has experimented with a system in which there is a single waiting line with multiple checkout servers (known as the multiple-server queuing system). A sample of 100 customers was selected randomly, and their mean waiting time to check out was 9.52 minutes. A)Is it necessary to assume...
A bus comes by every 13 minutes. The times from when a person arives at the busstop until the bus arrives follows a Uniform distribution from 0 to 13 minutes. A person arrives at the bus stop at a randomly selected time. Round to 4 decimal places where possible. a. The mean of this distribution is b. The standard deviation is ? c. The probability that the person will wait more than 7 minutes is ? d. Suppose that the...
The mean waiting time to pass through airport security at a small airport is 3 minutes. The wait time has an exponential distribution. Answer the following questions. What is the probability that the wait time will be less than or equal to 2 minutes? What is the probability that the wait time will be more than 3 minutes? What is the probability that the wait time will be between 2 and 5 minutes?
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the standard deviation of the waiting time is 2 minutes. Find the probability that a person will wait for more than 8 minutes. Round your answer the four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 55 minutes and the standard deviation of the waiting time is 22 minutes. Find the probability that a person will wait for more than 33 minutes. Round your answer to four decimal places.
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 6 minutes and the standard deviation of the waiting time is 2 minutes. Find the probability that a person will wait for more than 9 minutes. Round your answer to four decimal places.
A person arrives at a bus stop each morning. The waiting time, in minutes, for a bus to arrive is uniformly distributed on the interval (0,15). a. What is the probability that the waiting time is less than 5 minutes? b. Suppose the waiting times on different mornings are independent. What is the probability that the waiting time is less than 5 minutes on exactly 4 of 10 mornings?
The time spent waiting in the line is approximately normally distributed. The mean waiting time is 5 minutes and the standard deviation of the waiting time is 1 minute. Find the probability that a person will wait for more than 3 minutes. Round your answer to four decimal places.