1.130 Find some values of z. Find the value z of a standard Normal variable Z that satisfies each of the fol- lowing conditions. (If you use Table A, report the value of z that comes closest to satisfying the condition.) In each case, sketch a standard Normal curve with your value of z marked on the axis. (a) 28% of the observations fall below z. (b) 60% of the observations fall above z.

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