when finding the area of the distribution that is above or below a negative z score, you: simply look up the…

Brief Explanations:

The standard normal distribution (z - distribution) is symmetric about z = 0. For finding areas related to negative z - scores, we can use the absolute value of the z - score in the standard z - table (which usually gives values for non - negative z - scores). The body of the z - table gives the area from the left - hand tail up to a given z - score. For a z - score of - 0.50, we look up the value for |- 0.50| = 0.50 in the body of the z - table. The value corresponding to z = 0.50 in the body of the standard normal table is 0.6915, but this is the area to the left of z = 0.50. Since the distribution is symmetric, the area to the left of z=-0.50 is 1 - 0.6915=0.3085.

Answer:

For the first question: simply look up the absolute value of the z score and then determine if you need to use the tail or body column of the table For the second question: 0.3085