Example(s) of Biomodal distributions

Dear R users:

I am currently teaching a course in Statistics. Can someone give an R code(s) to create a biomodal curve(s)
with shaded area of 90% and with 5% in each tail

With many thanks
abou

 

==========================
AbouEl-Makarim Aboueissa, Ph.D.
Associate Professor of Statistics
Graduate Program Coordinator
Department of Mathematics & Statistics
University of Southern Maine
96 Falmouth Street
P.O. Box 9300
Portland, ME 04104-9300
USA

Tel: (207) 228-8389
Fax: (207) 780-5607
Email: aaboueissa <at> usm.maine.edu
          aboueiss <at> yahoo.com

Office: 301C Payson Smith

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