What is the probability that waiting time is at most 7 seconds? What is the probability that waiting time is between 7 and 8 seconds?
Given that the probability density function of the waiting time is known, which of the following represents the probability
P(x≤7) and P(7a) P(x≤7)=0.7, P(7b) P(x≤7)=0.3, P(7c) P(x≤7)=0.7, P(7d) P(x≤7)=0.3, P(7