Any Normal Distribution
Same as a normal distribution, but also ...
Standard Normal 
NonStandard Normal 
Mean = 0

Mean is not 0

This table has not been verified against the book, please use the table out of your textbook.
There is a table which must be used to look up standard normal probabilities. The zscore is broken into two parts, the whole number and tenth are looked up along the left side and the hundredth is looked up across the top. The value in the intersection of the row and column is the area under the curve between zero and the zscore looked up.
Because of the symmetry of the normal distribution, look up the absolute value of any zscore.
There are several different situations that can arise when asked to find normal probabilities.
Situation  Instructions 
Between zero and any number 
Look up the area in the table 
Between two positives, or Between two negatives 
Look up both areas in the table and subtract the smaller from the larger. 
Between a negative and a positive 
Look up both areas in the table and add them together 
Less than a negative, or Greater than a positive 
Look up the area in the table and subtract from 0.5000 
Greater than a negative, or Less than a positive 
Look up the area in the table and add to 0.5000 
This can be shortened into two rules.
This is more difficult, and requires you to use the table inversely. You must look up the area between zero and the value on the inside part of the table, and then read the zscore from the outside. Finally, decide if the zscore should be positive or negative, based on whether it was on the left side or the right side of the mean. Remember, zscores can be negative, but areas or probabilities cannot be.
Situation  Instructions 
Area between 0 and a value  Look up the area in the table Make negative if on the left side 
Area in one tail  Subtract the area from 0.5000 Look up the difference in the table Make negative if in the left tail 
Area including one complete half (Less than a positive or greater than a negative) 
Subtract 0.5000 from the area Look up the difference in the table Make negative if on the left side 
Within z units of the mean  Divide the area by 2 Look up the quotient in the table Use both the positive and negative zscores 
Two tails with equal area (More than z units from the mean) 
Subtract the area from 1.000 Divide the area by 2 Look up the quotient in the table Use both the positive and negative zscores 
Using the table becomes proficient with practice, work lots of the normal probability problems!