Find p(not a 2).
x 1 2 3 4
p(x) 0.30 0.40 0.15 0.15
a. 0.70
b. 0.60
c. 0.30
d. 0.40

Option B is correct.    

Step-by-step explanation:

We have been given the different probabilities at different point we need to find the probability of not of 2

We know that sum of probabilities is 1

Here, the probability that is P(a 2)=0.40

Hence, the required probability is 1-0.40=0.60

Therefore, option B is correct.