Covid 19 vaccines from 3 manufactures are being tested for safe use among students under 20 yyrs old . A proprtion  of 35%, 50% and 15%  of student volunteers have been given the Feezer(F)n , Magneto(M) and Astrozen(AZ) vaccines .Based on the initial results , Feezer is shown to produce 97% effectiveness against infection among volunteers  receiving the vaccine , while Magneto  and Astrozen are reported to  have 90% and 80% effectiveness rate amongst volunteer subjects    draw the probability tree for the above scenario .

A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
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Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Covid 19 vaccines from 3 manufactures are being tested for safe use among students under 20 yyrs old . A proprtion  of 35%, 50% and 15%  of student volunteers have been given the Feezer(F)n , Magneto(M) and Astrozen(AZ) vaccines .Based on the initial results , Feezer is shown to produce 97% effectiveness against infection among volunteers  receiving the vaccine , while Magneto  and Astrozen are reported to  have 90% and 80% effectiveness rate amongst volunteer subjects 

 

draw the probability tree for the above scenario .  

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