Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Statistics and Probability Expert

Regression analysis with prediction intervals.

Almost all U.S. light-rail systems make use of electric cars that run on tracks built at street level. The Federal Transit Administration claims light-rail is one of the safest modes of travel, with accident rate of .99 accidents per million passenger miles as compare to 2.29 for buses. The following data show the miles of track and the weekday ridership in thousands of passengers for six light-rail systems (USA Today, January 7, 2003).

 

City

Miles of Track

Ridership (1000s)

Cleveland

15

15

Denver

17

35

Portland

38

81

Sacramento

21

31

San Diego

47

75

San Jose

31

30

St. Louis

34

42

 

a. Use these data to develop an estimated regression equation that could be used to predict the ridership given the miles of track.
Compute b0 and b1 (to 4 decimals).
Complete the estimated regression equation (to 2 decimals).

b. Compute the following (to 2 decimal):
SSE
SST
SSR
MSE

c. What is the coefficient of determination, i.e., r-squared (to 3 decimals)?
Does an estimated regression equation provide a good fit?

d. Develop a 95 percent confidence interval for the mean weekday ridership for all light-rail systems with 30 miles of track (to 1 decimal).

e. Suppose that Charlotte is considering construction of a light-rail system with 30 miles of track. Build up a 95 percent prediction interval for the weekday ridership for the Charlotte system (to 1 decimal).
Do you think that the prediction interval you developed would be of value of Charlotte planners in anticipating the number of weekday riders for their new light-rail system?

Statistics and Probability, Statistics

  • Category:- Statistics and Probability
  • Reference No.:- M922821

Have any Question? 


Related Questions in Statistics and Probability

Imagine you obtained a point biserial correlation of 35

Imagine you obtained a point biserial correlation of .35 between gender and punctuality, showing that men arrived later to class than did women. You think that this correlation might be due to the fact that more women th ...

The population of lengths of aluminum-coated steel sheets

The population of lengths of aluminum-coated steel sheets is normally distributed with a mean of 30.05 inches and a standard deviation of 0.3 inches. What is the probability that average length of a steel sheet from a sa ...

A car salesmen claims that a particular make of a car would

A car salesmen claims that a particular make of a car would give a mean mileage of greater than 20mpg. If I ran 10 cars on one gallon of gas each and came up with 10 different results, what statistical formula would I us ...

You are playing blackjack in a casino the casino is using a

You are playing blackjack in a casino. The casino is using a single, 52 card deck. Shuffling the deck takes time. So rather than shuffling the deck after each hand, the casino deals three hands before shuffling. The used ...

John is an avid fisherman and wants to know if there is a

John is an avid fisherman and wants to know if there is a correlation between the amount of time he spends fishing and the amount of fish he catches. He decided to keep track of the time he spent at the lake and the amou ...

Assignmentstatistical analysisdirections be sure to save an

ASSIGNMENT Statistical Analysis Directions: Be sure to save an electronic copy of your answer before submitting it to Ashworth College for grading. Unless otherwise stated, answer in complete sentences, and be sure to us ...

1 consider the circumstances under which a

1. Consider the circumstances under which a repeated-measures experimental research design, rather than a between-participants experimental design, might be more or less appropriate. 2. Explain what counterbalancing refe ...

The following electoral method is used to choose the mayor

The following electoral method is used to choose the mayor of Whoville: Every resident ranks the candidates from most preferred to least preferred, and places this ranked list in a ballot box. Each candidate receives a n ...

A ski gondola carries skiers to the top of a mountain it

A ski gondola carries skiers to the top of a mountain. It bears a plaque stating that the maximum capacity is 14 people or 2324 lb. That capacity will be exceeded if 14 people have weights with a mean greater than 2324 l ...

A student wonders if people of similar heights tend to date

A student wonders if people of similar heights tend to date each other. She measures herself, her roommate, and the women in adjoining rooms; then she measures the next man each woman dates. Here are the data (heights in ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro