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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 zscores 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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 Spring '08
 ABDUS,S.
 Standard Deviation, Percentage point, Proposition

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