Statistics Examples

0.8 \leq z \leq 2.6

$0.8 \leq z \leq 2.6$

Step 1

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

0.28817903

$0.28817903$ .

z = 0.8

$z = 0.8$ has an area under the curve

0.28817903

$0.28817903$

Step 2

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

0.49535807

$0.49535807$ .

z = 2.6

$z = 2.6$ has an area under the curve

0.49535807

$0.49535807$

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.

0.49535807 - (0.28817903)

$0.49535807 - (0.28817903)$

Step 4

Find the area between the two z-scores.

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Step 4.1

Multiply

- 1

$- 1$ by

0.28817903

$0.28817903$ .

0.49535807 - 0.28817903

$0.49535807 - 0.28817903$

Step 4.2

Subtract

0.28817903

$0.28817903$ from

0.49535807

$0.49535807$ .

0.20717904

$0.20717904$

0.20717904

$0.20717904$

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