Alicia scored a 70 on her psychology quiz,but the class as a whole averaged a 40.If the standard deviation was 10,what was Alicia's z-score?

Name: Alicia scored a 70 on her psychology quiz,but the class as a whole averaged a 40.If the standard deviation was 10,what was Alicia's z-score?
Brand: Quizplus
Rating: 4.7 (45 reviews)

Question

Quizplus · Accepted Answer

To find the z-score, we use the formula: z-score = (value - mean) / standard deviation. 
Plugging in the values, we get:
z-score = (70 - 40) / 10 = 3

Alicia Scored a 70 on Her Psychology Quiz,but the Class