Question

After the introduction of a new soft drink, a taste test is conducted to see how it is being received. Of those who participated, 48 said they preferred the new soft drink, 112 preferred the old soft drink, and 40 could not tell any difference. What is the probability that a person in this survey, chosen at random, preferred the new soft drink?

Answer 1

add up the three groups of people to get the total # of people surveyed

from there, calculate (# of people who preferred the new drink) / (total # of people surveyed)