Finite Math Examples

$μ = 25$ , $σ = 1.5$ , $x = 28$

Step 1

The z-score converts a non-standard distribution to a standard distribution in order to find the probability of an event.

$\frac{x - μ}{σ}$

Step 2

Find the z-score.

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Step 2.1

Fill in the known values.

$\frac{28 - (25)}{1.5}$

Step 2.2

Simplify the expression.

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Step 2.2.1

Simplify the numerator.

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Step 2.2.1.1

Multiply $- 1$ by $25$ .

$\frac{28 - 25}{1.5}$

Step 2.2.1.2

Subtract $25$ from $28$ .

$\frac{3}{1.5}$

Step 2.2.2

Divide $3$ by $1.5$ .

$2$

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