Answer:
18
Step-by-step explanation:
2:3 x 9
18:27
18 + 27 = 45
Step-by-step explanation:
we need the graph to answer!!
Answer:
519
Step-by-step explanation:
Let's assume that the scores for the national verbal proficiency test follow a normal distribution.
Mean score (μ) = 500
Standard deviation (σ) = 75
According to a Z-score table, the score for the 60th percentile is roughly z = 0.253
For any score "x", the z-score is given by:

For z = 2.53:

The raw score to the 60th percentile is 519.