To explain: Whether 54% provides an indication that the majority of the American adults sensed that childhood vaccination is important.
Answer to Problem CS
Solution: There is 95% chance that approximately half of the adult Americans support childhood vaccination.
Explanation of Solution
As the value is obtained on the basis of the sample, it may vary if another set of sample is considered. So, a percentage of error is allowed for the study. The margin of error in plus or minus 4% points provides that the value will vary between 50% and 58%. However, it may be possible that the value is outside the
Therefore, it can be said that there is 95% chance that there are 50% to 58% of adult Americans who believe that childhood vaccination is important, that is, approximately half of the Americans support childhood vaccination for any sample.
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