Recent content by bartowski

The probability that an individual recovers from an illness in a one-week time period without treatment is 0.1. Suppose that 20 independent individuals suffering from this illness are treated with a drug and 4 recover in a one-week time period. If the drug has no effect, what is the probability...

The number of cracks in a section of interstate highway that are significant enough to require repair is assumed to follow a Poisson distribution with a mean of two cracks per mile. What is the probability that there are no cracks that require repair in 5 miles of highway? any help guys? :)

now i understand. thanks! :)

git the answer already. thanks! :)

thanks! :)

so you think the solution is right? :)

i was thinking of that. if you add it on the other hand, its too low i'm not quite sure with my solution :(

i was thinking about this: numerator: 18C2, 18C2, 19C2 --- but I'm not sure if you ADD or MULTIPLY these denominator: 55C6

thanks for helping :)