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1. The grades on a chemistry midterm at Springer are roughlysymmetric with ?=67 and ?=2.0. William scored 66on the exam.

1. Find the z-score for William's exam grade. Round to twodecimal places.
2. What percentage of students in this midterm scored lessthan William?
3. What percentage of students scored more than 70 in thismidterm?

2. The grades on a language midterm at Oak are roughly symmetricwith ?=67 and ?=2.5. Ishaan scored 70 on theexam.

1. Find the z-score for Ishaan's exam grade. Round to twodecimal places.
2. What percentage of students in this midterm scored lessthan Ishaan?
3. What percentage of students scored more than 70 in thismidterm?

3. The grades on a math midterm at Springer are roughlysymmetric with ?=78 and ?=5.0. Omar scored 70 onthe exam.

1. Find the z-score for Omar's exam grade. Round to twodecimal places.
2. What percentage of students in this midterm scored lessthan Omar?
3. What percentage of students scored more than 80 in thismidterm?
4. What percentage of students scored between 70 and 90 inthis midterm?

4. The grades on a geometry midterm at Springer are roughlysymmetric with ?=68 and ?=2.0. Emily scored 69 onthe exam.

1. Find the z-score for Emily's exam grade. Round to twodecimal places.
2. What percentage of students in this midterm scored lessthan Emily?
3. What percentage of students scored more than 75 in thismidterm?
4. What percentage of students scored between 65 and 75 inthis midterm?