Concept explainers
The sampling method used in the given problem is valid or not is to be described and the number caramel popcorn boxes are to be calculated.

Answer to Problem 4CYU
The sampling method is not valid to predict the number caramel popcorn boxes sold out at the theatre.
Explanation of Solution
At the movie theatre, theatre group took a survey to analyze the selling numbers of popcorn. For conducting a survey, they selected randomly a group of
Flavour | Number of students |
Butter | |
Cheese | |
Caramel | |
Plain |
Here, the group consider a random sample of
As it involves the number of responders who wants to participate in the survey. Therefore, the sampling method used here is not valid to produce the accurate as well as the valid prediction of the total number of popcorn of the caramel.
Conclusion:
Hence, the sampling method is not valid.
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