The owner of a sports arena wanted to predict what additional refreshment options would sell best. He selected 100 seat numbers
at random and surveyed the occupants of those seats.
Identify the population and sample for this situation
The population is the occupants of the 100 selected seats; the sample is
the refreshment options.
The population is the occupants of all seats in the sports arena; the sample
is the occupants of the 100 selected seats.
The population is all people who buy refreshments in the sports arena; the
sample is the occupants of the 100 selected seats.
The population is the occupants of the 100 selected seats; the sample is all
people who buy refreshments in the sports arena.

The probability that a u.s. resident has traveled to canada is 0.18 and to mexico is 0.09. a. if traveling to canada and traveling to mexico are independent events, what is the probability that a randomly-selected person has traveled to both? (page 109 in the book may ) b. it turns out that only 4% of u.s. residents have traveled to both countries. comparing this with your answer to part a, are the events independent? explain why or why not. (page 119 may ) c. using the %’s given, make a venn diagram to display this information. (don’t use your answer to part a.) d. using the conditional probability formula (page 114 in the book) and the %’s given, find the probability that a randomly-selected person has traveled to canada, if we know they have traveled to mexico.