Mia is pet-sitting for a friend's dog while he is on vacation. her friend has given mia all sorts of information, including the veterinarian's name and phone number, pet emergency center location, and the dog's favorite bedtime snack. the first evening of the vacation, mia realizes that her friend did not bring the dog's food over, and she has no idea what the dog eats. her friend's cell phone is "out of range" at the moment, so mia must go to the grocery store and shop for dog food, even though she has never bought it before now. in this case, even though mia is not a dog owner, she is likely to be part of the market for dog food for all of the following reasons except
a. she has the authority to purchase the dog food.
b. she possesses the buying power for purchasing dog food.
c. she has the need or desire for dog food.
d. her ability to purchase the dog food is questionable.
e. she is willing to use her buying power.

Alarge university wanted to study the relationship between completing an internship during college and students' future earning potential. prom the same graduating class, they selected a random sample of 80 students who completed an internship and 100 students who did not complete an internship and examined their salaries five years after graduation. they found that there was a statistically higher mean salary for the internship group than for the noninternship group. which of the following interpretations is the most appropriate? a. there could be a confounding variable, such as student major, that explains the difference in mean salary between the internship and no internship groups.b. we cannot infer anything from these data since the distribution of salaries is likely right skewed.c. you cannot draw any valid conclusions because the sample sizes are different.d. more students should complete internships because having an internship produces a higher salary.