Stats17 - A SRS of 1000 adults asks if they agree with the statement “I support President Obama.” Suppose that 60 of all US adults Would agree

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Unformatted text preview: A SRS of 1000 adults asks if they agree with the statement “I support President Obama.” Suppose that 60% of all US adults Would agree if asked this question so the population parameter= Round the standard deviation of thempleprgpofii‘dfiflto five decimal places. Using that rounded number, what is the probability that the Survey result differs from the truth about the population by more than 2 percentage points? (Use z-scores that actually appear in Table A. Round your final answer to four decimal places. Remember to express your answer as a proportion.) 3. A SRS of 1000 adults asks if they agree with the statement “I support President Bushf’ Suppose that 30% of all US adults would agree if asked this question so the population parameter= 0.3. Round the standard deviation of the sample proportion f) to five decimal places. Using that rounded number, whatis the probability that the survey result falls within three percentage points of the true population proportion? (Use 2— scores that actually appear in Table A. Round your final answer to four decimal places. Remember to express your answer as a proportion.) , ' . ...
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This note was uploaded on 04/27/2010 for the course PAM 2100 taught by Professor Abdus,s. during the Spring '08 term at Cornell University (Engineering School).

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Stats17 - A SRS of 1000 adults asks if they agree with the statement “I support President Obama.” Suppose that 60 of all US adults Would agree

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