Math Problem Statement
After 2 months of the previous polling, you sample 2100 people and found that 630 of them say they support the Candidate
Find a 95% confidence interval for the increase in support in two months.
Test whether the null hypothesis of the support between the two time positions is the same vs. the alternative hypothesis of the support changing in two months
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Confidence Intervals
Hypothesis Testing
Proportions
Formulas
Standard Error of Proportions
Z-test for Proportions
Theorems
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Suitable Grade Level
Advanced Undergraduate
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