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Consider a small self-service car wash that has cars arriving with exponentially distributed inter arrival times at a mean rate of 15 per hour. The car wash has 3 washing bays, each equipped with a pressure spraying hose that the customer uses to wash off the car. Washing time, in either bay, is exponentially distributed with a mean washing time of 4 minutes. The car wash has very little space and can accomodate only 2 washing cars in addition to those being washed. If all 2 spots are occupied arriving cars leave and go elsewhere to be washed.
1. What is the expected number of cars at the car wash?
Five digit random numbers (e.g.; 601, 022, 448...), determine the first four elements that will be selected for the simple random sample.
Although the rules of probability are just basic facts about percents or proportions, we need to be able to use the language of events and their probabilities.
Consumer Reports published an article on some sport-utility vehicles they had tested recently. They reported some basic information about each of the vehicles and the results of some tests conducted by their staff.
How many ways are there to select a subcommittee of 7 members from among a committee of 21 and how many possible passwords are there if 7 of the letters of the alphabet can be used by the system?
the hours of study and the final exam grades have this type of relationship y 5.76hours 35.31. based on this linear
A health magazine presented results of a recent study that analyzed data collected by the U.S. Census Bureau in 2000. Results reveal that for both men and women in the United States, heart disease remains the number one killer, victimizing 500,000..
an experiment was performed on a certain metal to determine if the strength is a function of heating time. results
a multiple choice exam has 10 questions. each question has 4 possible answers of which one is correct. a student
Perform a regression analysis using compa as the dependent variable and the same independent variables as used in question 2. Show the result, and interpret your findings by answering the same questions.
20% of their income tax returns are audited. Of five randomly chosen individuals, what is the probability that none will have their returns audited?
the meat department of a supermarket sells ground beef in approximate 1 lb packages but there is some variability. a
An immediate adjustment will be made on any tire that does not last 50,000 miles." You purchased four of these tires. What is the probability that all four tires will last more than 50,000 miles?
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