Quiz-Tree
Question 1
A snack company surveys 500 of its own customers and reports: "90% of people prefer our chips over the competition." What is the main problem with this claim?
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Answer question 1 to unlock
A town has 15,000 residents. A research team surveys a random sample of 300 residents and finds that 72% support building a new community center. Which conclusion is best supported?
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Answer question 2 to unlock
A school randomly assigns 100 students to two math programs: 50 students use Program A and 50 use Program B. After one semester, Program A students score significantly higher on a standardized test. What can the school conclude?
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Answer question 3 to unlock
A study finds that students who sleep 8 or more hours per night tend to earn higher grades than students who sleep fewer hours. A newspaper headline reads: "Sleeping more causes better grades." Is this headline justified?
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Answer question 4 to unlock
A researcher compares test scores of students who eat breakfast every morning with those who skip breakfast. She finds that students who eat breakfast score higher on average. What type of study is this?
correct answers
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