Finite Math Examples

1.7 \leq z \leq 2.5

$1.7 \leq z \leq 2.5$

Step 1

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

0.45545918

$0.45545918$ .

z = 1.7

$z = 1.7$ has an area under the curve

0.45545918

$0.45545918$

Step 2

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

0.4938094

$0.4938094$ .

z = 2.5

$z = 2.5$ has an area under the curve

0.4938094

$0.4938094$

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)

$0.4938094 - (0.45545918)$

Step 4

Find the area between the two z-scores.

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Step 4.1

Multiply

- 1

$- 1$ by

0.45545918

$0.45545918$ .

0.4938094 - 0.45545918

$0.4938094 - 0.45545918$

Step 4.2

Subtract

0.45545918

$0.45545918$ from

0.4938094

$0.4938094$ .

0.03835021

$0.03835021$

0.03835021

$0.03835021$

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