-0.38532
It is -0.51
The z-score is 0.84. In the related link, look in the body of the table for .3 area (.2995 closest) and it yields the .84 z-score.
The Z value is 0.
It is z = -0.5244
0.1587 or 15.87%
z = 1.75
A point that lies outside a country's production possibilities curve means that the country is not able to produce. The possibility curve shows how a country can efficiently produce.
It will shut down.
z = 0.6903
A perfectly competitive firm's supply curve is that portion of its marginal cost curve that lies above the minimum of the average variable cost curve.
A normal distribution is symmetric and when looked at on a graph, the graph looks like a bell shaped curve. Approximately 95 percent of its values should lie within two standard deviations of the mean. Frequency of the data lies mostly in the middle of the curve.
As far as I know you can have preferred lies anytime but whther or not the score counts is another matter.