Question

b) what z - score on the normal curve has an area of 0.6808 to its graph?
z =

Explanation:

Step1: Use z - table

We use the standard normal distribution table (z - table). The z - table gives the cumulative area under the standard normal curve to the left of a given z - score.

Step2: Find the z - score

Looking up the value 0.6808 in the body of the standard normal table, we find the corresponding z - score.

Answer:

0.47