Question: Show that For r = 1,2,3,..., and use this formula to express 3 and 4 in terms of moments about the origin. ()

Show that

() u-i 4, = 4 - (1) -1 u++(-1) +...+(-1)-(r- 1)

For r = 1,2,3,..., and use this formula to express µ3 and µ4 in terms of moments about the origin.

() u-i 4, = 4 - (1) -1 u++(-1) +...+(-1)-(r- 1)

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