Question:
Based on the premise "is it is it all voluntary", can we conclude that "It is voluntary."?
****
Answer:
it is not possible to tell

Question:
Based on the premise "In fact, although it costs only about $100 a year to have a Lojack, Ayres and Levitt estimate that each individual Lojack prevents about $1,500 a year in losses due to theft.", can we conclude that "The Lojack is estimated by Ayres and Levitt to save $1,500 each year in losses to theft."?
****
Answer:
yes

Question:
Based on the premise "Just how stupid could one be?", can we conclude that "A person can be very stupid."?
****
Answer:
it is not possible to tell