Finding the area under the normal curve:
1. Between 0 and z value:
Look up the z value in the table to get the area.
2. In any tail:
a. Look up the z value to get the area.
b. Subtract the area from 0.5000.
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3. Between two z values on the same side of the mean:
a. Look up both z values to get the areas.
b. Subtract the smaller area from the larger area.
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4. Between two z values on opposite sides of the mean:
a. Look up both z values to get the areas.
b. Add the areas.
5. To the left of any z value, where z is greater than the mean:
a. Look up the z value to get the area.
b. Add 0.5000 to the area.
6. To the right of any z value, where z is less than the mean:
a. Look up the z value in the table to get the area.
b. Add 0.5000 to the area.
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7. In any two tails:
a. Look up the z values in the table to get the areas.
b. Subtract both areas from 0.5000.
c.Add the answers.
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