topic How to change the confidence interval in proc ttest? in Statistical Procedures

How to change the confidence interval in proc ttest?

arunabh21 — Tue, 23 May 2017 13:47:58 GMT

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)

Re: How to change the confidence interval in proc ttest?

Ksharp — Tue, 23 May 2017 13:52:08 GMT

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

Re: How to change the confidence interval in proc ttest?

Reeza — Tue, 23 May 2017 15:08:50 GMT

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

Re: How to change the confidence interval in proc ttest?

arunabh21 — Wed, 24 May 2017 12:28:42 GMT

Thank you so much! 🙂