The Probability That a Call Received by a Certain Switchboard

question 177

Multiple Choice

The probability that a call received by a certain switchboard will be a wrong number is 0.02.Use the Poisson approximation to the binomial distribution to find the probability that among 140 calls received by the switchboard,there are at least two wrong numbers.

• A)0.5305
• B)0.7616
• C)0.7689
• D)0.2384
• E)0.2311

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Definitions:

Direct Conversion

Direct conversion, in technology, refers to switching from an old system to a new one in a single step.

RAD

Rapid Application Development, a software development methodology aimed at providing quick results through iterative cycles and minimal planning.

Prototypes

Preliminary models of products or systems used for testing and validation before full-scale production or development.

RAD

Rapid Application Development is a form of agile software development methodology that prioritizes rapid prototype releases and iterations.