Question: Question 1 Internet service providers (ISP) need to resolve customer problems as quickly as possible. For one ISP, past data indicate that the likelihood is

Question 1

Internet service providers (ISP) need to resolve customer problems as quickly as possible. For one ISP, past data indicate that the likelihood is 0.80 that customer calls regarding Internet service interruptions are resolved within one hour. Out of the next 10 customer calls about interrupted service,

(a) What is the probability that at least 7 will be resolved within one hour?

(b) How many customers would be expected to have their service problems resolved within one hour?

Question 3

A mail-order company receives an average of five orders per 500 solicitations. If it sends out 100 advertisements, find the probability of receiving at least two orders. [Hint: Use the Poisson distribution]. Ensure that you define the variable of interest.

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