ANSWER
[tex]P(X=3 \: or \: X=0) = 0.45[/tex]
EXPLANATION
From the above table,
[tex]P(X=0) = 0.3[/tex]
and
[tex]P(X=3) = .15[/tex]
[tex]P(X=3 \: or \: X=0) = P(X=3) + P(X=0) [/tex]
This implies that;
[tex]P(X=3 \: or \: X=0) = 0.15 + 0.3[/tex]
[tex]P(X=3 \: or \: X=0) = 0.45[/tex]
