Telephone calls to an emergency number

Assignment Help Basic Statistics

Reference no: EM131130841

Question no. 35

Let N(t) be the number of telephone calls to an emergency number in the interval [0,t]. We suppose that {N(t),t ≥ 0} is a Poisson process with rate λ = 50 per hour

(a) What is, according to the model, the probability that there are more calls from 8 a.m. to 9 a.m. than from 9 a.m. to 10 a.m.?

(b) Suppose that 20% of the calls are redirected to another service. Knowing that there were 60 (independent) calls during a given hour and that the first of these calls was redirected elsewhere, what is the mathematical expectation of the number of calls that were redirected over the hour in question?

Reference no: EM131130841

Questions Cloud

How should steve respond to kim : The following is an excerpt from a conversation between the chief executive officer, Kim Jenkins, and the chief financial officer, Steve Mueller, of BKX Group Inc.: How should Steve respond to Kim?

What would the after-tax cash flow be from equipment sale : Today, Litchfield Design purchased a piece of equipment for 82,000 dollars that will be depreciated to 14,000 dollars over 17 years using straight-line depreciation. What would the after-tax cash flow be from the equipment sale if the equipment is so..

What is lu xun saying about life in this unusual story : Simply put, an allegory is a story in which the individual elements represent or symbolize some truth about human existence. Discuss Lu Xun's "Diary of a Madman" as an allegory. What is Lu Xun saying about life in this unusual story

Did you identify with people and situations in the selection : Did you identify with the people and situations in the selection? How? If not, how do you engage differently in interpersonal communication in similar situations to the ones described and analyzed?

Telephone calls to an emergency number : Let N(t) be the number of telephone calls to an emergency number in the interval [0,t]. We suppose that {N(t),t ≥ 0} is a Poisson process with rate λ = 50 per hour

What is the total amount of debt securities : What characteristics must debt ratings have in order to be useful to the capital markets? (See Understand Risk: The Truth About Credit Ratings.)

Cash flow effect from the change in net working capital : For project A, the cash flow effect from the change in net working capital is expected to be -100 dollars at time 2, the level of net working capital is expected to be 1,000 dollars at time 0, and the level of net working capital is expected to be 1,..

What is the predominant focus of the story august heat : What is the predominant focus of the story August Heat by W.H Harvey? Support your answer

Prepare tax memo advising faye on appropriate tax treatment : Prepare a tax research memo advising Faye on the appropriate tax treatment, given her situation, and with her type of income.

User Account

All Pages