Descriptive Statistics, Probability, Probability models, Discrete Radom Variables, Continuous Random Variables, Sampling and Sampling Distributions. Is this deadline possible?

Question 9
It is known that out of 10 TV’s , 9 would be able to last atleast for a duration of five years
without any repair.
Thus, the favourable case would involve the three given TV’s to be selected from these 9
TV’s only.
Total number of outcomes = 10C3
Favourable outcomes = 9C3
Hence, requisite probability = 9C3/10C3 = (9*8*7)/(10*9*8) = (7/10) =0.7
Question 10
The relevant formula for ascertaining the probability for s particular value x in Poisson
distribution is indicated by the following formula.
In the given case, µ = 3
a) P ( X = 0) = e-3 30/0! = 0.04979
Hence, probability of no...