Find the probability that there are exactly five calls

Assignment Help Business Economics
Reference no: EM132135970

The number of phone calls that arrive at a phone exchange is often modeled as a Poisson random variable. Assume that on average there are 7 calls per hour.

Show all work.

a) Find the probability that there are exactly five calls in one hour.

b) Find the probability that the number of phone calls that arrive in one hour is within one standard deviation from its mean.

Reference no: EM132135970

Questions Cloud

What and how do i find the variance : The following is a set of data from a sample of n=5
Case study-election results : When an election for political office takes place, the television networks cancel regular programming and instead, provide election coverage.
If the car has a navigation system and is silver : If the car has a navigation system and is silver, what is the probability that it is a Lincoln?
Effect on the population variance : State whether each of the following will increase, decrease, or have no effect on the population variance.
Find the probability that there are exactly five calls : a) Find the probability that there are exactly five calls in one hour.
Write a program that implements a stack. : Write a program that implements a stack. Your program will ask users to input a word letter-by-letter and then displays the word backward.
What percent of light bulbs will you have to replace : The average life span of your bulbs is 1600 days with a standard deviation of 90 days. What percent of light bulbs will you have to replace?
List important steps for publishing an app in the target : How can you start business by Mobile Application Development ? Discuss the testing process of Mobile Applications in detail ?
A company that manufactures gasoline station pumps : A company that manufactures gasoline station pumps must ensure that it pumps at least 1 gallon of gasoline 84% of the time.

Reviews

Write a Review

Business Economics Questions & Answers

  What quantity will each firm sell domestically

Suppose each monopolist is allowed to sell both domestically and export the good. At what price will the good be traded? What quantity will each firm sell domestically and what quantity will it export?

  Why is malware even a thing

Who stands to gain something from the use of malware? Is this a money-making opportunity or simply people that want to do harm?

  Make general statement about value of elasticity of demand

A price searcher faces a demand that is given by P = 100/Q. What does the Marginal Revenue curve look like (graph it). What is the value of elasticity of demand at quantities Q = 10; Q = 50; Q = 100? Can you make a general statement about the value o..

  About the likely net benefits of the proposed plan for home

Brunner and coauthors (2001) studied home ownership and median incomes in different California communities and their connection with voting on a proposal to promote school choice. What does this fact suggest about the likely net benefits of the propo..

  Calculate deadweight loss associated with the externality

Suppose that demand for a product is Q=140-6P and supply is Q=2P-20. Furthermore, suppose that the marginal external damage of consuming this product is $4 per unit. Does it result in under-consumption? Or over-consumption? How many more or less unit..

  What is the margin of error in cm

What is the margin of error in cm? (Round to one decimal place as needed.)

  Portray your switching costs

After you have been in a job for a while, you should portray your switching costs as:

  How will planned investment spending change events

How will planned investment spending change as the following events occur? The interest rate increases as a result of Federal Reserve policy. The U.S. Environmental Protection Agency decrees that corporations must upgrade or replace their machinery i..

  Increase in the monthly fire insurance premium

Suppose there is an increase in the monthly fire insurance premium that department stores have to pay. Assume that department stores are a competitive industry. In the short-run, will the prices of goods sold at department stores increase or remain u..

  The price of the impacted product

Identify one example of a price control that is used in the United States or in another country. Does the price control benefit or harm producers and/or consumers? Why? If the price control were not in place, what would happen to the price of the imp..

  Diseconomies of scale exist whenever long-run average costs

Diseconomies of scale exist whenever long-run average costs:

  Difference between the minimum amount

The difference between the minimum amount that producers would be willing sell their products for and the actual amount they receive

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd