Illustrative Math - Algebra 2 - Unit 7 - Lesson 9
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Last updated about 1 year ago
9 Questions
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1.
A publishing company is interested in the number of books read each year by people. They send out 50 volunteers to conduct research by collecting random samples of 20 people each and determining the number of books that group read in the previous year. After looking at the sample means, the company estimates that the mean number of books read is 12.4 with a margin of error of 2.4.
Based on these values, what interval is likely to contain the true mean number of books read in the previous year by the population?
S.IC.4
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2.
Based on surveys of random samples from people in a town, the proportion of people interested in a new chain restaurant opening in their town is 0.42 with a standard deviation of 0.07.
Which of these intervals is the smallest that likely contains 95% of the sample proportions?
S.IC.4
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8.
A restaurant offers 5 appetizers that the manager thinks sell equally well. After looking over the sales for the previous month, the percentages of sales are:
Based on these results, is the manager’s thinking accurate? Explain your reasoning.
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9.
Create a dot plot that displays a distribution with at least 9 data values that is symmetric.
S.IC.4
This lesson is from Illustrative Mathematics. Algebra 1, Unit 7, Lesson 9. Internet. Available from https://curriculum.illustrativemathematics.org/HS/teachers/3/7/9/index.html ; accessed 29/July/2021.
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