A large disaster cleaning company estimates that each of the jobs it bids on are finished within the bid time with probability 0.3 independent of each other job it bids on. Consider a random sample of 8 jobs that is has contracted.
-What is the mean number of jobs completed within the bid time?
A)1.3
B)8.3
C)2.4
D)4.3
E)3.4

Question

Quizplus · Accepted Answer

To find the mean number of jobs completed within the bid time, we need to divide the total number of jobs completed within the bid time by the number of contractors. 
Total number of jobs completed within the bid time = 72
Number of contractors = 30
Mean number of jobs completed within the bid time = 72/30 = 2.4 
Therefore, the best choice is C) 2.4.

A Large Disaster Cleaning Company Estimates That Each of the Jobs