Determine the area corresponding to the following z-scores.
1. greater than ๐ง = 2.31
2. less than ๐ง = 1.20
3. between ๐ง = โ1.96 and ๐ง = 2
(1). P(z>2.31)= 1- 0.9896 = 0.0104
(2.) P(z<1.20)= 0.8849
(3.) P(-1.96<z<2)= 0.97725- 0.02500ย = 0.95225
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