The Local Grocery Store Consists of Two Cashiers

question 5

Multiple Choice

The local grocery store consists of two cashiers. The customers arrive at the checkout according to the Poisson distribution and the service times are based on negative exponential distribution. The average customer service time is 4 minutes and the average time between the arrivals of successive customers is 3 minutes. Assume that customers equally divide themselves between the two cashiers.
-What is the probability that there are no customers in the grocery store?

• A).166
• B) .333
• C) .5
• D) .667

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Definitions:

Social Mobility Belief System

Belief that intergroup boundaries are permeable. Thus, it is possible for someone to pass from a lower-status into a higher-status group to improve social identity.

Subordinate Groups

Groups with less power, less access to resources, and lower social status compared to dominant groups within a society.

Higher-Status Groups

Refer to social groups that are perceived to have greater prestige, power, or access to resources compared to other groups.

Social Mobility Belief System

The set of beliefs related to the perceived fairness, possibility, and mechanisms of moving within a society's hierarchical structure.