Statistics Examples

0.7 \leq z \leq 2.4

$0.7 \leq z \leq 2.4$

Step 1

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

0.2580719

$0.2580719$ .

z = 0.7

$z = 0.7$ has an area under the curve

0.2580719

$0.2580719$

Step 2

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

0.49182129

$0.49182129$ .

z = 2.4

$z = 2.4$ has an area under the curve

0.49182129

$0.49182129$

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.

0.49182129 - (0.2580719)

$0.49182129 - (0.2580719)$

Step 4

Find the area between the two z-scores.

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Step 4.1

Multiply

- 1

$- 1$ by

0.2580719

$0.2580719$ .

0.49182129 - 0.2580719

$0.49182129 - 0.2580719$

Step 4.2

Subtract

0.2580719

$0.2580719$ from

0.49182129

$0.49182129$ .

0.23374938

$0.23374938$

0.23374938

$0.23374938$

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