Chapter 8.4, Problem 29E

The first three moments with origin '0' are given by п (п +1? (n + 1) (2n + 1) 1 n + 1 M2 and , 1 1 3. 4 2 Examine the skewness of the data.

How can I calculate the sigma part to get the answer 2200 when t goes from 0 to infinite? Please show me details. thank you so much!

paper 2 4. INDICES AND SURDS page 2012 N Q3 (i) Given that 2*-3 92-a = 16*, show that 3x+ 2y= 6. 5y = 25, find the value of x and of y. (ii) Given also that 125*-2