Table 13-1
The table below represents the probability distribution for machine breakdowns in a day of operation.
-According to Table 13-1,what is the cumulative probability of 2 breakdowns?
A)0.35
B)0.50
C)0.85
D)0.15
E)0.20

Question

Table 13-1
The table below represents the probability distribution for machine breakdowns in a day of operation. 
-According to Table 13-1,what is the cumulative probability of 2 breakdowns?
A)0.35 
B)0.50 
C)0.85 
D)0.15 
E)0.20

Quizplus · Accepted Answer

To find the cumulative probability of 2 breakdowns, we need to add up the probabilities of having 0, 1, or 2 breakdowns.

Cumulative probability of 0 breakdowns = 0.10
Cumulative probability of 1 breakdown = 0.40
Cumulative probability of 2 breakdowns = 0.35

Adding these up, we get:
0.10 + 0.40 + 0.35 = 0.85

Therefore, the cumulative probability of 2 breakdowns is 0.85, which corresponds to answer choice C.

Table 13-1 The Table Below Represents the Probability Distribution for Machine Breakdowns