Astudy of several cities shows a positive correlation between the percent of people who swim outdoors and the number of barbecue grills sold.

which statement is most likely true?

a. the correlation is due to a third variable: cost of milk.
b. the correlation is due to a third variable: weather.
c. swimming makes people hungry for a barbecue.
d. barbecuing makes people want to swim.

B. The correlation is due to a third variable: weather.
 because weather effects swimming and barbecues. :)

In all honesty, there really is no “work” per say to show. mainly it’s just using the process of elimination. the question is asking which domain(s) would be the most appropriate for the function c(n). n is the number of observed vehicles so right away, 1, 2, and 3 can be eliminated.why? 1, 2 start in the negatives and therefore it is impossible to observe negative cars. so, #4 would be the best answer to the given problem.