The mean of the 100 car speeds in Exercise 26 was 23.84 mph, with a standard deviation

Question:

The mean of the 100 car speeds in Exercise 26 was 23.84 mph, with a standard deviation of 3.56 mph.
a) Using a Normal model, what values should border the middle 95% of all car speeds?
b) Here are some summary statistics.

From your answer in part a, how well does the model do in predicting those percentiles? Are you surprised? Explain.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Stats Data and Models

ISBN: 978-0321986498

4th edition

Authors: Richard D. De Veaux, Paul D. Velleman, David E. Bock

See More Books

Question Posted: Jan 20, 2016 05:30 AM

See More Questions

The car speeds on a certain stretch of the interstate highway I-95 are known to be normally distributed with a mean of 72 and a standard deviation of 15. You have just heard a policeman comment that...
In 1959, BMW (Bayerische Motoren Werke) almost went bankrupt and nearly sold out to Daimler-Benz, the maker of Mercedes-Benz cars. BMW was able to recover to the point that in 1992 it passed Mercedes...
The 2010 Indianapolis 500 was a very competitive race with 1 minute separating the time between the winning car and fourteenth car to finish the race. The mean finishing time of cars in the Indy 500...
In Exercises, find the limit. x-4 lim x-00x + 1
Prepare the adjusting entry for each of the following situations: A. On May l, Unicover Services, Inc., had a $7,820 debit balance in its supplies account. During May, $4,250 of additional supplies...
Use linearity and the assumption that V o = 1 V to find the actual value of V o in Fig. 4.75 . 10 + Vx - 30 1A 40
Name activities in software development covered by various methodologies. Can you explain why more than one methodology is needed in developing a piece of software?
Hiatt Company sells automatic can openers under a 75-day warranty for defective merchandise. Based on past experience, Hiatt estimates that 3% of the units sold will become defective during the...
Oakland Precision Products ( OPP ) manufactures and sells a variety of scales for the kitchen and office. OPP sells primarily to kitchenware stores, discount stores, and so on . Two of the scales it...
For the circuit of Fig.4.141 (a) Does VC increase or decrease if RB is increased? (b) Does IC increase or decrease if Î² is reduced? (c) What happens to the saturation current if...
An incoming freshman took her college's placement exams in French and mathematics. In French, she scored 82 and in math 86. The overall results on the French exam had a mean of 72 and a standard...
NFL data from the 2013 football season reported the number of yards gained by each of the league's 181 wide receivers: The mean is 426.98 yards, with a standard deviation of 408.34 yards. a)...
The following income statement and information about changes in noncash current assets and current liabilities are reported. Changes in current asset and current liability accounts for the year that...
You are employed as one of 2 Payroll Officers at Azure Beach Accountants and Financial Services (ABAFS), who manages payroll responsibilities for several clients. An employee of Fraser Electrical,...
A client pays their 2017 state income tax payment on January 10, 2018. State tax payments are deductible on the schedule A within the state income taxes paid section. Which year would this 2017...
On March 1, 2023, Charles Chubb paid $1,400,000 for a new, state-of-the-art safe for use in Chubb's business. The safe was the only depreciable asset Chubb placed in service during 2023. Chubb's...
Presently, cost estimates for construction, operations & maintenance, and salvage value have been provided for students to perform present, annual, and future worth calculations. This assignment is...
The partner's basis is generally in the partnership tax return; instead, basis records are maintained by the partner. However, you can often approximate the partner's tax basis by adding two amounts...
Determine all Taylor polynomials of f (x) = x 4 + x + 1 at x = 2.
A fuel pump sends gasoline from a car's fuel tank to the engine at a rate of 5.88 10-2 kg/s. The density of the gasoline is 735 kg/m3, and the radius of the fuel line is 3.18 10-3 m. What is the...
Alexandra Damonte will be building a new resort in Myrtle Beach, South Carolina. She must decide how to design the resort based on the type of activities that the resort will offer to its customers....
Speedy Swift is a package delivery service that serves the greater Atlanta, Georgia, metropolitan area. To maintain customer loyalty, one of Speedy Swifts performance objectives is on-time delivery....
The following is the number of minutes to commute from home to work for a group of 25 automobile executives. a. How many classes would you recommend? b. What class interval would you suggest? c. What...
How can bash shell scripting improve resource utilization and process management in Unix systems?
A solid sphere that is uniformly positively charged produces an electric field. Assume no other objects are around. What is the magnitude of the electric field a distance r from the center of the...
Why is potential difference important in x - ray production?

The mean of the 100 car speeds in Exercise 26 was 23.84 mph, with a standard deviation

Question:

Speed 100% Max 34.060 30.976 28.978 25.785 50.0% Median 23.525 21.547 19.163 16.638 16.270 Percentile 90.0% 75.0% Q3 25.0% Q1 10.0% 25% 0.0% Min

Step by Step Answer:

a We know that 95 of the observations from a Normal model fall within 2 stand...View the full answer

Stats Data and Models

Students also viewed these Statistics questions