Final answer:
The z-value that has an area of 0.23 to its right is approximately -0.60.
Step-by-step explanation:
The z-value that has an area of 0.23 to its right can be found using the standard normal distribution table. First, we need to find the area to the left of the z-value by subtracting 0.23 from 1, which gives us 0.77. Then, we can use this area to find the corresponding z-value from the table.
Looking up the area of 0.77 in the table, we find that the z-value is approximately 0.60. However, since we are looking for the value to the right, we need to take the negative of the z-value, giving us -0.60 as the final answer.