Finite Math Examples

$1.7 \leq z \leq 2.5$

Step 1

Find the value in a look up table of the probability of a z-score of less than $0.45545918$ .

$z = 1.7$ has an area under the curve $0.45545918$

Step 2

Find the value in a look up table of the probability of a z-score of less than $0.4938094$ .

$z = 2.5$ has an area under the curve $0.4938094$

Step 3

To find the area between the two z-scores, subtract the smaller z-score value from the larger one. For any negative z-score, change the sign of the result to negative.

$0.4938094 - (0.45545918)$

Step 4

Find the area between the two z-scores.

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Step 4.1

Multiply $- 1$ by $0.45545918$ .

$0.4938094 - 0.45545918$

Step 4.2

Subtract $0.45545918$ from $0.4938094$ .

$0.03835021$

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