December 2013 - Paper3

26:
Cricketer 'A' scores on an average 40 runs with a standard deviation of 5. Scores of players 'B' and 'C', on an average, are 75 and 90 with standard deviations 10 and 18 respectively. Arrange the players in the descending order of consistency :
 A. A,B and C B. C,B and A C. B, A and C D. C,A and B Option: A Explanation :
27:
Among the following, choose the most suitable 'test' that can be applied to examine the influence of one factor on different groups :
 A. 't' test B. 'F' test C. 'Chi-square'test D. None of the above Option: B Explanation :
28:
A machine produced 20 defective articles in a batch of 400. After overhauling, it produced 10% defectives in a batch of 300. Which test of hypothesis can be applied to the above situation to examine whether the machine has improved ?
 A. Test of significance of a sample proportion (two-tail test) B. Test of significance of a sample proportion (one-tail test) C. Test of significance of difference between two sample proportion (two-tail test) D. Test of significance of difference between two sample proportion (one-tail test) Option: D Explanation :
29:

Strategies and policies

 A. are not ciosely related B. given direction C. are the framework for performance appraisal D. both (A) and (B) Option: D Explanation :
30:
According to Vroom's Expectancy Theory of Motivation,
 A. Force = valence divided by expectancy B. Force = valence x expectancy C. Force = strength of an individual preference for an outcome D. Valence - probability that a paritcular action shall lead to a desired outcome Option: D Explanation :