A Bank Manager Estimates That an Average of Two Customers

question 87

Multiple Choice

A bank manager estimates that an average of two customers enters the tellers' queue every five minutes. Assume that the number of customers that enters the tellers' queue is Poisson distributed. What is the probability that fewer than two customers enter the queue in a randomly selected five-minute period?

• A) 0.1353
• B) 0.2707
• C) 0.4060
• D) 0.6767

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Definitions:

Groups

Collections of subjects or data points that are often categorized for comparative analysis in experiments or studies.

Null Hypothesis

A statement that asserts there is no effect or no difference, typically the default assumption in a statistical test.

Groups

In statistics, groups refer to sets of subjects or data points that are classified together based on certain characteristics.

Null Hypothesis

A proposal in statistics that suggests no observable effect or no association between variables, serving as a premise to be tested against experimental evidence.