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.
10\3 you multiply 3 and 3 to get 9 then u add 1
Answer:
The answer is 9.725
Step-by-step explanation:
We have been given the mixed fraction ![9\frac{29}{40}](https://tex.z-dn.net/?f=9%5Cfrac%7B29%7D%7B40%7D)
First we will concert this to improper fraction.
![\frac{40(9)+29}{40}](https://tex.z-dn.net/?f=%5Cfrac%7B40%289%29%2B29%7D%7B40%7D)
= ![\frac{389}{40}](https://tex.z-dn.net/?f=%5Cfrac%7B389%7D%7B40%7D)
Now we will divide this using long division or calculator and get the answer 9.725.
The final price would be $35.10, hope this helps. :)