the probability of it raining today is 30%. what is the probability that it will not rain? 30% 70% 100% 0%
the probability of it raining today is 30%. what is the probability that it will not rain? 30% 70% 100% 0%
Answer
Explanation:
Step1: Recall probability rule
The sum of the probability of an event happening and not - happening is 1 or 100%. Let $P(R)$ be the probability of raining and $P(\neg R)$ be the probability of not - raining. So $P(R)+P(\neg R)=100%$.
Step2: Substitute given value
We know $P(R) = 30%$. Then $P(\neg R)=100% - P(R)$. $P(\neg R)=100% - 30%=70%$
Answer:
70%