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A Dry Cleaner Has a Single Drive-Thru Window for Customers

question 70

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A dry cleaner has a single drive-thru window for customers.The arrival rate of cars follows a Poisson distribution, while the service time follows an exponential distribution.The average arrival rate is 16 per hour and the average service time is three minutes.
(a)What is the average number of cars in the line?
(b)What is the average time spent waiting to get to the service window?
(c)What percentage of time is the dry cleaner's drive-thru window idle?
(d)What is the probability there are more than 2 cars at the drive-thru window?


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Creative and Challenging Work

Tasks or projects that require original thinking and problem-solving, often perceived as engaging and stimulating by those who perform them.

Self-Actualization

is the realization or fulfillment of one's talents and potentialities, considered as a drive or need present in everyone.

Safety Needs

The second level in Maslow's hierarchy of needs, encompassing the need for security, protection, and stability in one's physical and social environment.

Job Security

The probability that an individual will retain their job without the risk of becoming unemployed.

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