Answer:
44.4
Explanation:
[tex]\begin{gathered} \text{The total number of bushes }=4+4+2 \\ =10 \end{gathered}[/tex]Therefore, the expected number of roses is:
[tex]\begin{gathered} \text{Expected Number}=\sum XP(X) \\ =(0\times\frac{4}{10})+(38\times\frac{4}{10})+(73\times\frac{4}{10}) \\ =0+15.2+29.2 \\ =44.4 \end{gathered}[/tex]The expected value of X is 44.4.