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
Gesto, Inc., has an issue of preferred stock outstanding that pays a $4.50 dividend every year, in perpetuity. If this issue currently sells for $79.85 per share, what is the requi

1. HV Inc. is trying to determine the optimal time to undertake a product expansion. The project will require an initial investment of $15M and the firm has a WACC of 3%. The expan

Assessment Two tests your ability to conduct a factorial ANOVA and make appropriate decisions regarding any follow up comparisons. The following data set is adapted from Jaccard an

How can I use a balance sheet to do assignment with some adjustment? do I have to make transaction of each adjustment, and after that I change the balance sheet afterward?

Linear  regression is  a regression methods  that models  the  relationship  between  a dependent variable   independent variables ? X1 i = 1 .........p and a random term . the mod

The following are actual data showing the latitude of a sample of major cities in the northern hemisphere and their mean high annual temperature. latitude(X)    mean high temp(Y

Consider a multiple regression model Y=ß0+ß1X1+ß2X2+µ The sample data yields the following matrices: X’X= { ¦(33&0&0@0&40&0@0&20&60) } Y’X=¦((132&24&92)) ?(y-Y)2 =150 a. what



difference between histogram and historigram