(a) The first three moments of a distribution about the value 1 are 2, 25 and 80. Find the mean, standard deviation and the moment-measure of skewness. (b) The first and second moment of a distribution about the value 5 of the variable are 2 and 20. Find the mean and standard deviation.

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A: Given that :  u = 38.27 Standard deviation = 3.56 X = 35.52 By using standard normal distribution  Z...

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A: 1) 13! 13*12*11*10*9*8*7*6*5*4*3*2*1 13! = 6227020800 2) 10! 10*9*8*7*6*5*4*3*2*1 10! = 3628800  

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A: Solution is given:

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A: Therefore hence option (c) is not correct.

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Q: What type of sampling technique does this represent

A: here use basic of sampling method