If P (blue) is 0.3, what is P (not blue) ?/

A. 0.3

B. 0.5

C. 0.6

D. 0.7

Probability of Event Occurring + Probability of Event not occurring = 1.

Therefore:

P (blue) + P (not blue) = 1.

Therefore P (not blue) = 1 - P (blue)

P (blue) = 0.3

P (not blue) = 1 - P (blue) = 1 - 0.3 = 0.7

P (not blue) = 0.7

Option D.