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#### karush

##### Well-known member

- Jan 31, 2012

- 2,718

View attachment 1103

(a) Find the value of \(\displaystyle a+b\)

if the sum of \(\displaystyle E[X] = \)1 then \(\displaystyle 1-0.1-0.3 =0.6=a+b\)

(b) Given \(\displaystyle E[X]=1.5\), find the value of \(\displaystyle a\) and \(\displaystyle b\)

why would this be \(\displaystyle 1.5\)