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Statistics For Economics Ii Question Paper

Statistics For Economics Ii 

Course:Bachelor Of Commerce

Institution: Kenyatta University question papers

Exam Year:2009




KENYATTA UNIVERSITY
UNIVERSITY EXAMINATIONS 2008/2009
SECOND SEMESTER EXAMINATION FOR THE DEGREE OF BACHELOR OF
COMMERCE

AEC 303 : STATISTICS FOR ECONOMISTS II

DATE: TUESDAY 15TH SEPTEMBER 2009 TIME: 8.00 A.M. – 10.00 A.M.

INSTRUCTIONS: Answer Question ONE and any other TWO Questions

Question One (Compulsory)

a) Differentiate the following terms. (8 marks)
i) Estimators Vs. Estimates
ii) Parameter Vs. Statistic
iii) t-distribution Vs. standard normal distribution
iv) Correlation coefficient Vs. Coefficient of determination
b) For a random sample of 100 workers in a plant employing 1200, 70 prefer providing
for their own retirement benefits over belonging to a company-sponsored plan. Find
the 95% confidence interval for the proportion of all the workers in the plant who
prefer their own retirement plans. (5 marks)
c) Simple observations over the last 80 hours have shown that 800 customers enter a
certain bank. What is the probability that 5 customers will arrive in the bank during
the next one hour? (3 marks)
4, ‘Community participation is key to sustainable development’. Explain the following requirements for community participation.
a) Altitude (6 marks)
b) Knowledge (6 marks)
c) Skills (8 marks)
5. a) What preconditions are required for community development? (6 marks)
b) Identify common problems that hinder effective community development processes. (6 marks)
c) Suggest solutions to the above problems. (8 marks)






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