To create tolerance intervals
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1    Choose Stat > Quality Tools > Tolerance Intervals.

2    Choose one of the following from the drop-down list:

·    One or more samples, each in a column: Choose if you entered raw data in columns. Enter the columns that contain the sample data. Minitab performs separate tolerance interval analyses on each column.

·    Summarized data: Choose if you have summary values for the size, mean, and standard deviation of one sample.

-    In Sample size, enter the sample size.

-    In Sample mean, enter the mean of the sample.

-    In Standard deviation, enter the standard deviation of the sample.

3    If you like, use any dialog box items, then click OK.