Difference in the loss in man-hours - accidents in firms, Basic Statistics

An occupational health inspector was interested in determining whether there is a difference in the loss in man-hours due to accidents  by introducing a new safety programme.  The inspector randomly sampled 10 different plants and recorded the loss in man-hours due to accidents before and after the safety programme was implemented.  The data are displayed below:

1465_difference in the loss in man-hours.png

(a)  By hand, draw the appropriate dot plot(s) for this data set.  (You should consider the design of this study to ensure the relevant plot(s) is drawn.)  Comment on any features in the plot(s).

(b) (i) Is there an underlying mean difference in the loss in man-hours due to accidents before the safety programme was implemented  and after the safety programme was implemented?  Use SPSS to investigate this question.  Interpret your results.

(ii) Is there an underlying median difference in the loss in man-hours due to accidents before the safety programme was implemented and after the safety programme was implemented?  Use SPSS to investigate this question.  Interpret your results.

 (c) Which of the two tests from (b) is more appropriate for these data?  Justify your answer.

Posted Date: 3/22/2013 5:46:33 AM | Location : United States







Related Discussions:- Difference in the loss in man-hours - accidents in firms, Assignment Help, Ask Question on Difference in the loss in man-hours - accidents in firms, Get Answer, Expert's Help, Difference in the loss in man-hours - accidents in firms Discussions

Write discussion on Difference in the loss in man-hours - accidents in firms
Your posts are moderated
Related Questions
An experiment succeeds twice as often as it fails. Find the chance that in the next six trials there will be at least four successes

How important a role do you think IT will play in the conversion process from GAAP to IFRS? Manager 1: Earlier, we never expected the new rules to have such an impact on the

Definition of business valuation to determine the stock price of an entity. Business valuation is the value or price where a unit would be purchased at a given point in time. Usual

I need help on writing a paper about this title

the resultant of two perpandicular forces of magnitude p each will be

An audit of the accounting records of Loch Ness Ltd. for the year ending 30 June 2012 discovered that the ending inventory balance was over-valued by $35,000

1. What size sample will be needed to construct a 95% confidence interval on a ballot issue if the estimate must be 2% of the actual percent. This issue looks very close in the el

What is owner’s equity? Owner’s value is one of the three primary elements of a single proprietorship’s stability piece and bookkeeping situation. Owner’s value symbolizes

Discrete Standard Deviation For calculating standard deviation in discrete series any of the following methods may be applied (1) Actual mean method. (2) Assumed mean method. (

Mention the characteristics of Statistics. Explain any two applications of Statistics.