Final answer:
To find the probability that the changes do not take place due to the appointment of C, we need to calculate the probability that C is selected for the job. The chances of selection are in the ratio 1:2:4, which means the probability of C being selected is 4/7.
Step-by-step explanation:
To find the probability that the changes do not take place due to the appointment of C, we need to calculate the probability that C is selected for the job. The chances of selection are in the ratio 1:2:4, which means the probability of C being selected is 4/(1+2+4) = 4/7.
Therefore, the probability that the changes do not take place due to the appointment of C is 1 - 0.3 = 0.7.
To find the probability that the changes do not take place due to the appointment of C, we need to calculate the probability that C is selected for the job. The chances of selection are in the ratio 1:2:4, which means the probability of C being selected is 4/7.