Suppose a poll of 1066 adults asked how to deal with an energy shortage: use more production, more conservation, or both? Suppose 3 people are selected at random from this sample

More Production: 415
More Conservation: 572
Both: 55
No Opinion: 24
Total: 1066

a) What is the probability that all three responded "More conservation"?
(Round to three decimal places as needed.)
b) What is the probability that none responded "Both"?
(Round to three decimal places as needed.)
c) What assumption must be made to compute these probabilities?
A. The events are independent. B. The events occur simultaneously. C. The order of the events does not matter. D. The events are disjoint.