If the probability P(z ≥ 0.57) needs to be determined, this is given as follows: This value is 0.71566 which is the required answer.
This value is 0.07 and it is the 8 th entry in the first row. Here, 0.5 is taken and it is the 6 th entry in the first column. As the z score in the example is positive, the positive z table is used. The steps to use the z score table are as follows:
Suppose a z score is given as P(z ≤ 0.57) and the area to the left of this value needs to be determined. Thus, it is necessary to choose the correct z table in order to accurately map the z score. This implies that the raw score is either to the left of the mean or to the right respectively. The value of the z score can either be negative or positive.
