Question: please provide full calculations with formulas step by step. Question no. 3 (a) : The fourth mean moment of a symmetrical distribution is 243. What

please provide full calculations with formulas step by step.

Question no. 3

(a) : The fourth mean moment of a symmetrical distribution is 243. What would be the value of the

standard deviation in order that the distribution may be mesokurtic?

(b) : In a certain distribution, the first four moments about the point 4 are -1.5, 17, -30 and 108.

Calculate b1 and b2 and state whether the distribution is leptokurtic or platykurtic?

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