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The grades on a language midterm at Santa Rita are roughly symmetric with u = 70 and o = 5.5

Ishaan scored 72 on the exam.

Find the z-score for Ishaan's exam grade. Round to two decimal places.​

Respuesta :

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Answer:

0.36

Step-by-step explanation:

Given that:

Mean = 70

Standard deviation = 5.5

score (x) = 72

Formular for obtaining Standardized score (Zscore) :

Zscore = [score (x) - mean] / standard deviation

Hence,

Zscore = (72 - 70) / 5.5

Zscore = 2/ 5.5

= 0.3636363

Zscore = 0.36 ( 2 decimal place)

Answer:

-1.67

Step-by-step explanation:

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