Unit 8, Lesson 16
Estimating Population Proportions
Grade 7
Practice
Problem 1
Student Task Statement
Tyler wonders what proportion of students at his school would dye their hair blue if they were allowed to. He surveyed a random sample of 10 students at his school, and 2 of them said they would. Kiran didn’t think Tyler’s estimate was very accurate, so he surveyed a random sample of 100 students, and 17 of them said they would.
- Based on Tyler's sample, estimate what proportion of the students would dye their hair blue.
- Based on Kiran's sample, estimate what proportion of the students would dye their hair blue.
- Whose estimate is more accurate? Explain how you know.
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