A study published in April 2000 in the British Medical Journal reported on a Scotland survey regarding the numbers of surveyed high school students carrying weapons and engaging in illegal drug use.

a. To demonstrate that drug users were more likely than non-users to carry weapons, what two percentages should be compared? (Report them.)

b. The table shows that drug users were how many times as likely to carry weapons as non-users?

c. To demonstrate that students who carried weapons were more likely to use illegal drugs than those who didn't carry weapons, what two percentages should be compared? (Report them.)

d. The table shows that those who carried weapons were how many times as likely to use illegal drugs as those who didn't carry weapons?