data elvennine;
infile 'J:t11-4 trade employees.txt';
input emp;
run;
proc arima data=elvennine;
identify var=emp(1,12);
estimate q=(1)(12) noconstant printall plot;
forecast lead=12 out=pred ;
run;
I am wondering what do I add to the forecast statement so it will give me a 99% pred interval, instead of just the standard 9 % confidence one
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