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A-For the data given below find the coefficient of variation and karl pearson?s coefficient ofskewness: Classes 45-55 55-65 65-75 75-85 85-95 95-105 105-115 115-125 Freq 9 21 23 34 45 68 1906 b-The incidence of Corona virus in a certain workshop is such that a workmen have a 20percent chances of suffering from it. What is the probability that out of 10 workmen not more than3 will be tested positive for virus? c-Two team A and B play 18 games of cricket, of which 6 arewon by A, 8 are won by team B, and 6 end in a tie. They agree to play a tournament consisting of 3games. Find the probability that (i) B will win all the three games (ii) A will win at least I game.​

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