1902 Words8 Pages

BUSINESS STATISTICS ASSIGNMENT
Project Title: Employee retention at D&Y consulting firm
Section E:
Group 2:Anshul Garg (11FN-015)-Finance Gokul Sudhakaran(11DM-039)-Marketing Kaviya .A. (11DM-057)- Marketing Nikhil Gagrani(11DM-089)- Marketing Sheth Dharmil Nirupam(11DM-147)-Marketing Taru(11IB-061)-International Business
Submission Date:- 9th September,2011
TABLE OF CONTENTS
1. Case
2. Objective of the problem
3. Methodology used
4. Analysis
5. Excel output
6. Conclusion
7. Managerial implications
CASE: EMPLOYEE RETENTION AT D&Y CONSULTING FIRM
Demand for systems analysts in the consulting industry is very strong.*…show more content…*

c.)Find a 95% confidence interval for the difference between the above obtained mean starting salaries. d) Among all employees whose starting salary is below the median ($37,750), find a 95% confidence interval for the proportion who stay with D&Y for at least 3 years. e.) Find a 95% confidence interval for the proportion who stay with D&Y for at least 3 years but this time with starting salaries above the median. f) Find a 95% confidence interval for the difference between these proportions. From this interval, can we conclude that there is a significant difference in the proportions at the 5% level of significance? 2. D&Y wonders whether the percentage of time on the road might influence who stays and who leaves. a. Among all employees who travel less than the median (54%), find the 95% confidence interval for the proportion who stay with D&Y for at least 3 years. b. Do the same for the employees that travel more than the median who have stayed beyond 3 years. c. Then find the 95% confidence interval for the difference between proportions. From this confidence interval, can we conclude that there is a significant difference in the proportions? 3.Find a 95% confidence interval for the mean tenure(in months) of all employees who leave D&Y within 3 years of being Hired. Why is it not possible with the given data to find a confidence interval for the

c.)Find a 95% confidence interval for the difference between the above obtained mean starting salaries. d) Among all employees whose starting salary is below the median ($37,750), find a 95% confidence interval for the proportion who stay with D&Y for at least 3 years. e.) Find a 95% confidence interval for the proportion who stay with D&Y for at least 3 years but this time with starting salaries above the median. f) Find a 95% confidence interval for the difference between these proportions. From this interval, can we conclude that there is a significant difference in the proportions at the 5% level of significance? 2. D&Y wonders whether the percentage of time on the road might influence who stays and who leaves. a. Among all employees who travel less than the median (54%), find the 95% confidence interval for the proportion who stay with D&Y for at least 3 years. b. Do the same for the employees that travel more than the median who have stayed beyond 3 years. c. Then find the 95% confidence interval for the difference between proportions. From this confidence interval, can we conclude that there is a significant difference in the proportions? 3.Find a 95% confidence interval for the mean tenure(in months) of all employees who leave D&Y within 3 years of being Hired. Why is it not possible with the given data to find a confidence interval for the

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