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Serga [27]
3 years ago
14

Test scores are normally distributed with a mean of 100 and a standard deviation of 15. An individual score is found to

Mathematics
1 answer:
-BARSIC- [3]3 years ago
6 0

Answer:

Because the boundary value is less than the mean, you automatically know the z score will be negative.

z = (x - mu)/sigma = (90 - 100)/15 = -10/15 = -2/3 = -.67

Step-by-step explanation:

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