(47
(Choose 1 answer)
Suppose the time interval between two consecutive defective light bulbs from a production line has a uniform distribution over an interval from 0 to 90 minutes.
What is the probability that the time interval between two consecutive defective light bulbs will be at least 80 minutes?
A. 0.11
B. 0.89
C. 0.23
D. 0.77
