The expression P(z<1.27) represents the area under the standard normal curve below the given value of z.
What is P(z<1.27)?
0.1020
0.1038
0.8962
0.8980
Look at your POSITIVE z-score table
look at z = 1.27 the value from the table is .8980 that is the fraction of the total that is less than z 1.27