| Question : The variable Z has a standard Normal distribution.
a) Find the number z that has cumulative proportion 0.85.
b) Find the number z such that the event Z Answer : Use the percentile to z-score calculator for one sided cumulative proportion of a) .85 = 1.04 b) .40 = -.25 You can aslo visualize the area by using the interactive graph of the standard normal curve and hover over .85 and .40 to see the z-scores. | How helpful was this answer?
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