1. Prove or give counterexample. (a) If (rn) and (yn) diverge, then (rn + Yn) diverges. (b) If (1n) and (yn) diverge, then (r„Yn) diverges. (c) If (rn) and (xn + Yn) converge, then (yn) converges. (d) If (x„) and (rnYn) converge, then (y„) converges.

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Estimation

A new framework of data analysis where the new statistical methods are used for interpreting the results and analyzing the data is known as estimation in statistics.