Saturday
April 19, 2014

Homework Help: Statistics

Posted by waqas on Wednesday, August 17, 2011 at 2:14pm.

The turnover (in millions of pounds) for 8 train companies and 8 coach companies are given below.

Train 4.3 13.2 134 88 92 66.5 122.1 102
Coach 2.2 31 44 72 19 89.3 55.9 43.1

(a)Using an appropriate statistical test determine whether train companies or coach companies have higher turnovers. State the test used, your null hypothesis, your conclusion and the evidence you base that conclusion upon.
(b)Find the 99% confidence interval for the train companiesí variation in turnover.
(c) Perform an F test (using α=0.05) to determine whether the difference in variation between train and coach company turnover is significant.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

statistics - A football coach claims that the average weight of all the opposing...
Math - Train A and train B leave station going in opposite directions. Train B ...
College Physics - The electric motor of a model train accelerates the train from...
Math - A coach is collecting a fee from each player on her soccer team. She ...
Algebra - Train A and B are traveling in the same direction on parallel tracks. ...
algebra - Train A and B are traveling in the same direction on parallel tracks. ...
Math - Day Number of Players Amount Collected Monday: 4 $ 88 Tuesday: 7 $154 ...
algebra - please tell me if these are right. Soybean meal is 12% protein, ...
college - Trains A and B are traveling in the same direction on parallel tracks...
college - Trains A and B are traveling in the same direction on parallel tracks...

Search
Members