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?
A)-3
B)+3
C)-0.3
D)+0.3

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? A)-3 B)+3 C)-0.3 D)+0.3
Brand: Quizplus
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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