A post office has three clerks, each of whom is serving a customer. The service times are i.i.d. Exp(µ). A new customer will arrive after Exp(λ) units of time, independently of the others. Find the probability that all the three existing customers finish their services before the arrival.

Q: Find the probability ​P(Ec​) if ​P(E)=0.25.

A: We want to find vlaur of people(Ec)

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Q: Find the probability P(Ec​) if ​P(E)=0.42.

A:

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A: p(goal)=p=0.7q=1-p=0.3n=20x=no. of goalsp(X=x)=nCxpxqn-x      binomial

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A:

Q: find the probability that a random chosen point i in the figure lies in the shaded region.

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