60. Standard Normal areas Find the proportion of observations in a standard Normal distribution that
satisfies each of the following statements.
(a) z< -2.46
(b) 0.89 < z < 2.46

The great thing about this problem is they give you everything you need to solve it easily. so the expression is: 12h+30w12h+30wand so everywhere you have an “h” you place 66. and everywhere you have a “w” you place 33. then the expression will look like this: 12(66)+30(33)12(66)+30(33)from here you multiply and then add. getting the following of: $785,862hope this