College-Pro Painting Does Home Interior and Exterior Painting

College-Pro Painting does home interior and exterior painting. The company uses inexperienced painters that do not always do a high-quality job. It believes that its painting process can be described by a Poisson distribution with an average of 4.8 defects per 400 square feet of painting. What is the probability that six randomly sampled sections of size 400 square feet will each have 7 or fewer blemishes?

A) 0.2818
B) 0.3414
C) 0.4857
D) 0.6509

Correct Answer:

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