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 Question 23 The following table gives heights of boys and girls studying in a college.Find (i) Standard deviation of the heights of boys and girls taken together, (ii) Whose heights are more variable. This question has 0 answers so far. 8 (a) Find the class intervals if the arithmetic mean of the following distribution is 33 and assumed mean 35: (b) "Statistics is a bundle of lies". Comment. This question has 0 answers so far. 3 From the marks obtained by 8 students in Accountancy and Statistics,compute rank coefficient of correlation: This question has 0 answers so far. 3 Solve the following transportation problem whose cost matrix, availability at each plant and requirements at each warehouse are given as follows: This question has 0 answers so far. 3 A company has to assign four workers A, B, C and D to four jobs W,X,Y and Z. The cost matrix is given below: Suggest an optimal assignment schedule and the total cost pertaining thereto. This question has 0 answers so far. 2 Solve the LP problem using simplex method: This question has 0 answers so far. 2 (a) Write the dual of the following linear programming problem: (b) What are the characteristics of dual problem and what are its advantages? This question has 0 answers so far. 1 "Statistics is the science of estimates and probabilities". "Elucidate the above statement and a more comprehensive definition of the science of statistics. This question has 0 answers so far. 1 (a) Compute the regression coefficient of Y and X from the following data: (b) If two regression coefficients are -0.9 and -0.3, what would be the value of the coefficient of correlation? This question has 0 answers so far. 0 a) Based on the frequency distribution given below, .compute the following statistical measures to characterise distribution.i) Co-efficient of variationii) Inter-quartile rangeiii) Modal value This question has 0 answers so far. 0 What are averages? Calculate the mean and median for the following frequency distribution n: This question has 0 answers so far. 0 a) The following data relate to the price and supplies of a commodity during a period of eight years Calculate the coefficient of correlation between the two series;b) What is regression? Why are there, in general, two regression lines? Under what conditions can there be only one regression line? This question has 0 answers so far. 0 a) Does the correlation coefficient imply 'causation' between two variables? b) What is Rank Correlation? State merits and demerits of Spearman's Rank Correlation method.   This question has 0 answers so far. 0 An animal feed company must produce 200 kg of mixture consisting of ingredient X1 and X2 daily. X1 costs Rs. 3 per kg and X2 costs Rs. 8 per kg. Not more than 80 kg of X1 can be used and at least 60 kg of X2 must be used. Find out how much of each ingredient should be used if the company wants to minimize the cost. This question has 0 answers so far. 0 a) Find the dual of Maximize Z= 4x1+x2+7x3Subject to the constraints b) Explain the following in brief: i) Slack variable ii) Surplus variables iii) Shadow prices This question has 0 answers so far. 0 Four Operators 01, O2, O3 and O4 are available to a manager who has to match four jobs J1, J2, J3, J4 done by assigning one job to each operator. The time needed by different operators for different jobs is given below. i) How should the manager assign the jobs so that the total time needed for all jobs is minimum? ii) If job J2 is not to be assigned to operator O2. What should be the assignment and how much additional total time will be required?  This question has 0 answers so far. 0 A company has three factories at A, B and C which supply to warehouses at D,E,F and G respectively. Monthly production capacities of these factories are 250, 300 and 450 units respectively. warehouse requirements are 200, 225, 275 and 300 units, respectively. The current Unit transportation costs (in Rupees) from factories to warehouses are as follows: Determine the optimum distribution for this company, to minimize cost. This question has 0 answers so far.
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