- 5 A A Purchasing Agent Obtained Samples Of Lamps From Two Suppliers He Had Samples Tested In His Own Laboratory For L 1 (196.04 KiB) Viewed 93 times
Use the method Coefficient of variation for solving (a)
5. a. A purchasing agent obtained samples of lamps from two suppliers. He had samples tested in his own laboratory for length of life, with the following results: Length of life (in hours) Sample A Sample B 600-800 10 5 800-1000 15 40 1000-1200 28 12 1200-1400 7 3 eV Compare the variability in the length of life of the two distributions using an appropriate measure. Which company's lamps should be preferred by the buyer and why? b. Listed below is the percentage increase in sales for the MK Corporation over the last 7 years. Determine the average percentage increase in sales over the period? Give reasons about your choice of average. 9.5%, 13.8%, 11.7%, 11.9%, 14.7%, 15.0%,20% c. When is it not possible to find Geometric Mean and Harmonic Mean?