In Exercises 3946, find the determinant of the matrix. Expand by cofactors using the indicated row or column. 5010 126343 (a) Row 2 (b) Column 2

MAT 258 Gregory Schneider 1/29/2016 Class Notes Recap of 1/27 notes: o Sampling distributions associated with values of a statistic over all samples of a given size n - Sampling Distribution of sample mean x o If X ~ NM, ơ )… Then x ~ N (M, ơ/ √n ) ) o (CLT): If n ≥ 30 and x has mean M, standard deviation √n 2 isơ with any distribution, then x ≈ N (M,ơ/ ) ) In other words: M = M, and ơ ơ/ √n