Calculate the z-score for each set of data. Determine who did better on her respective test, Tonya or Lisa.
Student English Test Grade z-Score Student Math Test Grade z-Score
John 82 Jim 81
Julie 88 Jordan 85
Samuel 90 Saye 79
Tonya 86 Lisa 82
Mean 86.50 81.75
St. Dev. 3.42 2.50
Given the above information, predict the raw score for a student whose z-score in the Math test is .98.
1. Find the area associated with this section of the curve: between z = -1.15 and z = -1.35.
2. Find the area associated with this section of the curve: between z = -.35 and z = .35.
3. Find the area associated with this section of the curve: between z = 1.05 and z = 1.55.
4. Find the area associated with this section of the curve: beyond z = 1.30.