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Margaret [11]
3 years ago
14

students’ scores on an anthropology test have a mean of 31 with a standard deviation of 3.5 if rochelle scores 20 on her test, h

ow many standard deviations away from the mean is her score
Mathematics
1 answer:
Valentin [98]3 years ago
4 0

Answer:

3.14

Step-by-step explanation:

The difference between her score and the mean is:

20 − 31 = -11

The number of standard deviations that equals is:

-11 / 3.5 ≈ -3.14

Her score is approximately 3.14 standard deviations below the mean.

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