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Pune University - SY BSc (Sem - I) STATISTICS - I : Statistical Techn, April 2010

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Total No. of Questions : 4] P278 [Total No. of Pages : 2 [3717] - 121 S.Y. B.Sc. STATISTICAL TECHNIQUES STT-211 : Statistical Techniques - I (New Course) (Sem. - I) (Paper - I) Time : 2 Hours] Instructions to the candidates: 1) All questions are compulsory. 2) Figures to the right indicate full marks. 3) Use of calculator and statistical tables is allowed. 4) Symbols and abbreviations have their usual meaning. [Max. Marks : 40 Q1) Attempt each of the following : a) Choose the correct alternative in each of the following : [1 Each] i) The equation of regression plane X1 on X2 and X3 is 2X1 + 5X2 + X3 = 10. The value of b12.3 is : A) 5/2 B) 1/3 C) 2/5 D) 2 ii) If X N(10, 4) then p(X < 10) is equal to : A) 0.10 B) 1/2 C) 0 D) 10/4 iii) If X NB (4, 2/3) then variance of X is : A) 4 B) 8/3 C) 3 D) 1/4 b) State Whether the given statement is true or false in each of the following : [1 Each] i) If X NB(k, p) then mean > variance. ii) Let X N(10, 10) and Y N(10, 10). If X and Y are independent then X Y N(0, 0). 2 iii) b12.3 b13.2 = r12.3. c) Define standard normal distribution. [1] d) State lack of memory property of geometric distribution. [1] [1] e) Define partial correlation coefficient r12.3. f) Give a real life situation where multinomial distribution can be applied. [1] P.T.O.

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Additional Info : S.Y. B.Sc. Statistics (Semister - I), STT - 211 : Statistical Techniques - I (Paper - I) (New Course), Pune University
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