Answer:
To solve the probability that Y is not less than two, just subtract the probabilities if it's 0 and 1.
[tex]p_{Y < 2} =1-p_{Y=0} -p_{Y=1} =1-0.009-0.376=0.615[/tex]
Another solution is to add the probabilities if Y is 2 to 5 which is also equal to 0.615.
