Is the sample valid? First you must see if the number of students in the table corresponds to the number of students surveyed that was 75. We have then: 33 + 15 + 27 = 75 We have then that: The sample is valid.
what percent of students prefer caramel popcorn? We can make the following rule of three to answer this question: 75 ---> 100% 27 ---> x Clearing x we have: x = (27/75) * (100) x = 36% 36% percent of students prefer caramel popcorn
