To calculate a test and confidence interval for a proportion
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1    Choose Stat > Basic Statistics > 1 Proportion.

2    Do one of the following:

·    If you have raw data, choose One or more samples, each in a column, and enter the columns containing the raw data.

·    If you have summarized data:

1    Choose Summarized data.

2    In Number of trials, enter a single numeric integer for the number of trials. Often the number of trials will be your sample size..

3    In Number of events, enter one or more numeric integers as the observed number of events.

3    If you like, use any dialog box options, and click OK.