What is the new standard deviation

Assignment Help Basic Computer Science
Reference no: EM131380418

Car speeds again. For the car speed data of Exercise 18, recall that the mean speed recorded was 23.84 mph, with a standard deviation of 3.56 mph. To see how many cars are speeding, John subtracts 20 mph from all speeds.

a) What is the mean speed now? What is the new standard deviation?

b) His friend in Berlin wants to study the speeds, so John converts all the original miles-per-hour readings to kilometers per hour by multiplying all speeds by 1.609 (km per mile). What is the mean now? What is the new standard deviation?

Exercise 18

Car speeds. John Beale of Stanford, CA, recorded the speeds of cars driving past his house, where the speed limit read 20 mph. The mean of 100 readings was 23.84 mph, with a standard deviation of 3.56 mph. (He actually recorded every car for a two-month period. These are 100 representative readings.)

a) How many standard deviations from the mean would a car going under the speed limit be?

b) Which would be more unusual, a car traveling 34 mph or one going 10 mph?

Reference no: EM131380418

Questions Cloud

Which equation best represents the taylor rule : Which equation best represents the Taylor rule?
What are some benefits of the benefits-cost ratio : What are some benefits of the Benefits-Cost Ratio? What are some disadvantages of the Benefits-Cost Ratio? What are some depreciation methods? What are the more common methods used in the United States? What does depreciation mean?
Methods be used to maximize your companys profits : Suppose your company sells four products and during a year a customer will buy each product at most once.- How can the methods be used to maximize your company's profits?
Create a procedure : Create a procedure named STATUS_SHIP_SP that allows a company to employee in the Shipping Department to update the status of an order to add shipping information. The BB_BASKETSTATUS table maintains a list of events for each order so that a shoppe..
What is the new standard deviation : Car speeds again. For the car speed data of Exercise 18, recall that the mean speed recorded was 23.84 mph, with a standard deviation of 3.56 mph. To see how many cars are speeding, John subtracts 20 mph from all speeds.
Find a profit maximizing a two part tariff : It costs you $5 in variable costs to provide a customer with a round of golf. Find a profit maximizing a two-part tariff. Each market segment is of equal size.
Calculate the fed inflation target from information : Suppose the federal funds rate is 4.4 percent and you know that the Fed is following the Taylor rule. You don't know the Fed's inflation target, but the equilibrium real interest rate is 4 percent, the inflation rate is 3 percent, the weight on the G..
Explain the concept of risk-based corrective action : What should prospective buyers of commercial property do tin order to protect themselves from liability under CERCLA? Explain the concept of Risk-Based Corrective Action (RCBA).
What should the federal funds rate be : Suppose the economy is thought to be 1 percent below potential (i.e., the output gap is −1 percent), when potential output grows 4 percent per year. Suppose the Fed is following the Taylor rule, with an inflation rate of 4 percent over the past year...

Reviews

Write a Review

Basic Computer Science Questions & Answers

  How your circuit achieves the desired behavior

Design a circuit that meets the specifications of Exercise 7.89 using edgetriggered D flip-flops (74x74) and NANO and NOR gates without feedback loops. Give a complete circuit diagram and a word description of how your circuit achieves the desired..

  Program to display the amount of time it will take

The program will then display the amount of time it will take. (Round the answer to four decimal places.) Input Validation: Check that the user has selected one of the available choices from the menu. Do not accept distances less than 0.

  Part of a security team at a large corporation

You are part of a security team at a large corporation. Recently, a colleague asked why there is a policy against using public wireless networks with their company laptops. You explain that hackers use software to steal and analyze network traffic..

  Describe how a direct search works using a b+-tree index

Describe what happens to the index tree when you insert new records into a file with a B+-tree index.

  Explain in detail each step of the machine cycle show the

high-level computer languages are created to be understood by humans. as a result the keywords and the commands of

  Describe where to apply continuum mechanics

Mechanics of material modelled as continuum is called Continuum Mechanics. Where can you apply continuum mechanics? Continuum mechanics has been successfully applied to solids.

  Design an algorithm that makes the following exchange

The arrows indicate that b is to assume the value of α, c the value of b, and so on.

  What is the purpose of a cross join in mdx

Question 8 Given the range of reporting and data extraction tools, when does it make sense to use OLAP? What would you consider the main selling points of OLAP technology? When would OLAP not be a good choice?

  Describe how variables in perl are handled

Also, describe how variables in Perl are handled, specifically with respect to the need for declaration and type casting.

  Why did the organization require a voip solution

Conduct an Internet search to locate a case study that shows how VoIP was beneficial to an organization.

  Write a sql query to display customer id

Use joining technique (WHERE commands is preferred[1]) to write a SQL query to display customer ID, customer name, and customer address for all the customers who are doing business with PVFC in the territory of Southwest.

  What is the potential application of this field

List three protocols in the IPv4 network layer that are combined into a single protocol in IPv6.

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