Question: 1.80 Find more proportions. Using either software or Table A, find the proportion of observations from a standard Normal distribution for each of the following

1.80 Find more proportions. Using either software or Table A, find the proportion of observations from a standard Normal distribution for each of the following events. In each case, sketch a standard Normal curve and shade the area representing the proportion.

a. Z ≤ −1.7

b. Z ≥ −1.7

c. Z > 2.1

d. −1.7< Z < 2.1

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