When three or more orders are placed, one (1) technical expert from PLDT, the country's broadband and digital services provider, is assigned to the city. For a 100,000-person city, supposed orders follow a Poisson distribution with a mean of 0.25 each week. If your city has a population of 800,000 people, what is the likelihood that a technical expert would be needed after a week? a. 0.3322 b. 0.2323 c. 0.3233 d. 0.2233

A First Course in Probability (10th Edition)
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Chapter1: Combinatorial Analysis
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When three or more orders are placed, one (1) technical expert from PLDT, the country's broadband and digital services provider, is assigned to the city. For a 100,000-person city, supposed orders follow a Poisson distribution with a mean of 0.25 each week. If your city has a population of 800,000 people, what is the likelihood that a technical expert would be needed after a week?

a. 0.3322
b. 0.2323
c. 0.3233
d. 0.2233
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