If the probability that it will rain tomorrow is 0.30, what is the probability that it will not rain tomorrow?
1 answer:
P = probability it rains tomorrow
q = probability it does not rain tomorrow
Since it either rains or it doesn't rain, this means p+q = 1
Think of 1 as 100% indicating total certainty
Solve for q to get
q = 1-p
by subtracting p from both sides
We're given p = 0.30 which is the probability of it raining, so,
q = 1-p
q = 1-0.30
q = 0.70
Answer: 0.70
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