A light bulb at art museum has expected life of 500 hours and standard deviation of 6 hours. Employ Chebychev's Inequality to determine the probability that one of these light bulbs will last between 480 and 520 hours of use.
a) 0.0900
b) 0.3000
c) 0.9100
d) 0.9730
e) 0.7000