Since the standard deviation is not given, we assume the process is a Poisson process, with mean 12000 miles.
From Poisson distribution tables, we see that with a value of lambda(mean)=12000, the lower tail probability for x=12140 miles is 0.9000105, which means that the 90 percentile is 12140 miles.
The lower-tail probability of 9000 miles is 6.2*10^(-181) which is essentially zero.
NOTE: if the problem were modelled with a normal distribution, the probabilities would be completely different.
Answer:
I think its SSS
Step-by-step explanation:
5x+20-20= 5x. 5x is the answer
Answer:
i will if you mark this brainliest
Step-by-step explanation:
Answer:
20.25
Step-by-step explanation:
c = (9/2)²
c = 81/4
c = 20.25