Math Problem Statement
A survey asked, "How important is it to you to buy products that are made in America?" of the 600 Americans surveyed, 150 responded, "It is not important." For each of the following levels of confidence, find the sample proportion and the margin of error (MOE) associated with the poll. (Give the answers to one decimal place, if needed.) (a) An 85% level of confidence Sample proportion is
Incorrect: Your answer is incorrect. % MOE = %
(b) A 98% level of confidence Sample proportion is
Incorrect: Your answer is incorrect. % MOE =
Incorrect: Your answer is incorrect.
Solution
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Math Problem Analysis
Mathematical Concepts
Statistics
Confidence Intervals
Sample Proportion
Margin of Error
Formulas
Sample Proportion (p̂) = Number of favorable responses / Total sample size
Margin of Error (MOE) = z* × √[(p̂(1 - p̂)) / n]
Theorems
Central Limit Theorem
Suitable Grade Level
Grades 10-12
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