The following represents the probability distribution for the daily demand of computers at a local store. The probability of having a demand for at least two computers is
A) 0.75.
B) 0.35.
C) 0.60.
D) 1.00.

Question

The following represents the probability distribution for the daily demand of computers at a local store.  ​ The probability of having a demand for at least two computers is
A) 0.75. 
B) 0.35. 
C) 0.60. 
D) 1.00.

Quizplus · Accepted Answer

To find the probability of demand for at least two computers, we need to add up the probabilities of demand for two, three, four, or five computers.

P(demand for at least two) = P(demand for two) + P(demand for three) + P(demand for four) + P(demand for five)

P(demand for at least two) = 0.2 + 0.3 + 0.1 + 0.05

P(demand for at least two) = 0.6

Therefore, the answer is C, with a probability of 0.60.

The Following Represents the Probability Distribution for the Daily Demand