The Probability That a Call Received by a Certain Switchboard

question 8

Multiple Choice

The probability that a call received by a certain switchboard will be a wrong number is 0.01.Use the Poisson approximation to the binomial distribution to find the probability that among 120 calls received by the switchboard,there are no wrong numbers.

• A)0.6988
• B)0.3012
• C)0.3614
• D)0.6386
• E)0.3313

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Definitions:

Bloodborne Pathogens

Microorganisms in human blood that can cause disease, including viruses such as HIV and hepatitis B and C.

Asymptomatic Carrier

An individual who harbors pathogens and can spread disease but does not exhibit symptoms themselves.

Virulence

The degree of pathogenicity within a group or species of parasites or pathogens, indicating their ability to cause disease.

Medicated Nose Drops

Liquid medication administered through the nostrils to alleviate symptoms of nasal congestion, allergies, or infections.