Final answer:
For a left-tailed Z-test with a Z-score of -2.05, the correct P value would be 0.0202, which is found in the Z-table as the area to the left of Z.
Step-by-step explanation:
The question involves identifying the correct formula for calculating the P value in a left-tailed Z-test. Given that Z = -2.05, the P value can be found using a Z-table which will give the probability of Z being less than -2.05 in a standard normal distribution. The correct answer can be determined by looking at the Z-table, which typically provides the area to the left of a given Z value. Therefore, the P value is simply the value found in the Z-table for Z = -2.05.
If we were to look at the standard normal distribution table, we would see that the area to the left of Z = -2.05 is approximately 0.0202. Consequently, the correct P value for a left-tailed Z-test with Z = -2.05 is around 0.0202.
Answer: a) P = 0.0202