(b) The number of traffic accidents that occur in a city within a day has a Poisson distribution a mean value of 2. Also the number of people injured in the different accidents is independently distributed and has a Poisson distribution with mean 3.0. (i) What is the probability of getting (1) two or more accidents in a given day (1I) 5 accidents in a 2- day period? (ii) What is the probability that there is a waiting time more than 1 day before the next accident appears? (ii) Find the mean and the standard deviation of the total number of people injured in one given day.
Permutations and Combinations
If there are 5 dishes, they can be relished in any order at a time. In permutation, it should be in a particular order. In combination, the order does not matter. Take 3 letters a, b, and c. The possible ways of pairing any two letters are ab, bc, ac, ba, cb and ca. It is in a particular order. So, this can be called the permutation of a, b, and c. But if the order does not matter then ab is the same as ba. Similarly, bc is the same as cb and ac is the same as ca. Here the list has ab, bc, and ac alone. This can be called the combination of a, b, and c.
Counting Theory
The fundamental counting principle is a rule that is used to count the total number of possible outcomes in a given situation.
Please answer question 6 part b
![(d) What is the mean recurrence time of E.?
e What is the interpretation of the mean recurrence time?
Question 6
(a) The pgf of a Poisson distribution with parameter A is given by, G(s) = ees]
%3D
Use the pgf to find the mean value and variance of the distribution.
(b) The number of traffic accidents that occur in a city within a day has a Poisson distribution a
mean value of 2. Also the number of people injured in the different accidents is independently
distributed and has a Poisson distribution with mean 3.0.
(i) What is the probability of getting (1) two or more accidents in a given day (1I) 5 accidents in
a 2- day period?
(ii) What is the probability that there is a waiting time more than 1 day before the next accident
appears?
(iii) Find the mean and the standard deviation of the total number of people injured in one given
day.
Question 7
(a) Explain the difference between a stochastic and a deterministic model.
(b) The pgf of the Poisson process at time
with parameter A = 1 and initial population size
N(0) = 2 is given by,
G(s, t) = s?et(s-1)
Use the pgf to find the mean and variance of the distribution at time't'
(c) The differential equations governing the simple birth process (with the usual notations) are;
Pn'(t) = -nà pn (t) + (n – 1)Apn-1(t),
n21
(i)
Po'(t) = 0,
n = 0
(ii)
Use the equation to work out the mean of the distribution using the initial condition
N(0) = a > 0.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdc7fc26c-9033-4ae5-b3b3-2d42c452b430%2F941df75a-df56-4eb6-9057-6e09b9913111%2F88fu3_processed.jpeg&w=3840&q=75)

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