1. Raw Score= 64, z-score = -0.47, the standard deviation = 5.77 and mean =66.73. What is the sta-nine score for this data and what is the formula used to reach this answer?

2. Raw Scores =66, z-score = -0.13, the standard deviation = 5.77 and the mean = 66.73. What is the sta-nine score for this data and what is the formula used to reach this answer?

The answer for #1. is 4.06 and the answer for #2. is 4.74. Please provide the formula for reaching these answers.