How to change the confidence interval in proc ttest?

[arunabh21]

Hi!

I was attempting a question where the dataset was paired dataset about time taken by patients to fall asleep before and after taking a sleeping pill. I used the procedure proc ttest to do a hypothesis testing on the data. But it is required to use a 90% Confidence Interval and by default in SAS, it is 95%. So, how can I change the CI to 90%?

Thanks in advance.

Regards,

Arunabh (A novice in SAS)

[Ksharp · Accepted solution]

proc ttest data=sashelp.class alpha=0.1;
class sex;
var weight;
run;

[arunabh21]

Thank you so much! 🙂 

[Reeza]

In addition to the ALPHA option, review the SIDES option.