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Oksana_A [137]
3 years ago
7

If a student scored 75 points on a test where the mean score was 83.5 and the standard deviation was 6.1. the student's z score

is ________. round to 2 decimal places.
Mathematics
2 answers:
Delvig [45]3 years ago
8 0

Answer: ( -1.5)

have a nice day:)

Gwar [14]3 years ago
6 0

Answer:

The z score is -1.39

Step-by-step explanation:

Taking into account, that the student score is 75 points, the mean score is 83.5 and the standard deviation is 6.1. The z score is calculated as:

z=\frac{x-m}{s}

Where x is the score that the student gets, m is the mean score and s is the standard deviation, so the z score is:

z=\frac{75-83.5}{6.1}=-1.39

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