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**Solution to Example 3.2, Problem 1**

This z-score tells you that x = 10 is **2.5** standard deviations to the **right** of the mean 5.

**Solution to Example 3.2, Problem 2**

z = **-4**. This z-score tells you that x= −3 is 4 standard deviations to the **left** of the mean.

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