1.118 Find some proportions. Using either Table A or your calculator or software, find the proportion of observations from a standard Normal distribution that satisfies each of the following statements. In each case, sketch a standard Normal curve and shade the area under the curve that is the answer to the question.
(a) Z > 1.75
(b) Z < 1.75
(c) Z > −0.80
(d) −0.80 < Z < 1.75