Normal Distribution and Z-Scores

On a standardized exam, the scores are normally distributed with a mean of 500 and a standard deviation of 25. Find the z-score of a person who scored 525 on the exam.

• 1

• -1

• 0

• 2

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 51 and a standard deviation of 10. Find the z-score of a person who scored 27 on the exam.

• -2.4

• 2.4

• 1.51

• -1.51

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 400 and a standard deviation of 40. Find the z-score of a person who scored 472 on the exam.

• 1.8

• -1.8

• 0.76

• -0.76

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 20. Find the z-score of a person who scored 294 on the exam.

• -0.3

• 0.5

• 0.3

• 0.95

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 300 and a standard deviation of 40. Find the z-score of a person who scored 400 on the exam.

• 2.5

• 25

• 2.5%

• -2.5

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 750 and a standard deviation of 100. Find the z-score of a person who scored 580 on the exam.

• -1.7

• 1.7%

• 1.12

• 1.7

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 36 and a standard deviation of 5. Find the z-score of a person who scored 39 on the exam.

• 0.6

• -0.6

• 0.79

• -0.79

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 75 and a standard deviation of 10. Find the z-score of a person who scored 45 on the exam.

• -3

• 3

• 1.44

• 2

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 195 and a standard deviation of 20. Find the z-score of a person who scored 140 on the exam.

• -2.75

• 275

• 2.75

• 5.72

Tags

CCSS.HSS.ID.A.4

On a standardized exam, the scores are normally distributed with a mean of 500 and a standard deviation of 40. Find the z-score of a person who scored 616 on the exam.

• 2.9

• -2.9

• 29

• 2.99

Tags

CCSS.HSS.ID.A.4