Question 1081337
z=(x-mean)/sd
For the first it is (106-101)/2.5 or z>2 =0.0228
For the second, it is z <-1 or 0.1587
For the third, it is z between -2 and +1 or 0.8186
For the fourth, it is z between -1 and +0.8 or 0.6295