Table 13-2
A new young mother has opened a cloth diaper service.She is interested in simulating the number of diapers required for a one-year-old.She hopes to use this data to show the cost effectiveness of cloth diapers.The table below shows the number of diapers demanded daily and the probabilities associated with each level of demand.

-According to Table 13-2, what is the cumulative probability that demand is less than or equal to 7?
A)0.85
B)0.95
C)0.80
D)0.15

Question

Table 13-2
A new young mother has opened a cloth diaper service.She is interested in simulating the number of diapers required for a one-year-old.She hopes to use this data to show the cost effectiveness of cloth diapers.The table below shows the number of diapers demanded daily and the probabilities associated with each level of demand.
 
-According to Table 13-2, what is the cumulative probability that demand is less than or equal to 7?
A)0.85 
B)0.95 
C)0.80 
D)0.15

Quizplus · Accepted Answer

To find the cumulative probability that demand is less than or equal to 7, we add up the probabilities for demand levels 1 through 7. 
0.06 + 0.12 + 0.16 + 0.20 + 0.19 + 0.13 + 0.09 = 0.85. 
Therefore, the answer is A) 0.85.

Table 13-2 A New Young Mother Has Opened a Cloth Diaper Service.She