1.10 When testing the hypothesis of = ož the following assumptions are %3D needed: independent samples from normal populations 1.11 Let Y1, Y2, ., Yn be a random sample with E[Y;] = µ and V[Y¡] = o2. Then 1 s' = n- 2 j=1 %3D is an unbiased estimator for o2 1.12 An unbiased estimator for o? can be calculated by dividing the error sum of squares SSE by (n-2)

Q: *07)8 Showthat arelation R lita onyis symmel-ric ifER=2-1

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A: Data in statistics is broadly divided into two categories  1) Quantitative data 2) Qualitative data.

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