Quiz-Tree
Question 1
A researcher wants to estimate the average amount of sleep high school students in a state get per night. Which sampling method would best allow the researcher to generalize the results to all high school students in the state?
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Answer question 1 to unlock
In a random sample of 80 registered voters in a town, 60 say they support a new parks proposal. There are 2,000 registered voters in the town. Based on the sample, approximately how many voters in the town support the proposal?
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Answer question 2 to unlock
A gym surveys its members and finds that 85% of them exercise at least three times per week. The gym concludes that 85% of all adults in the city exercise at least three times per week. Why is this conclusion likely invalid?
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Answer question 3 to unlock
A poll reports that 55% of residents in a county support a new recycling program, with a margin of error of 3 percentage points. Which of the following is the best interpretation?
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Answer question 4 to unlock
A school has 400 students. The principal randomly surveys 50 of them about their lunch preferences. In this situation, what is the population?
correct answers
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