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Unformatted text preview: More confidence answers 1. 2. 3. 4. 5.
Answer: 0<<300. If the sample size is 9 times as small then the mean distribution will be sqrt(9)=3 times wider. This means the new confidence interval must be 3 times wider. Original confidence interval was centered at 150 with 50 units between the mean and the lower and upper bound (i.e. 150-50< <150+50). New confidence interval will be 3 times wider or 150-50(3)< <150+50(3) = 0<<300. A confidence interval has been calculated to be 100<<200. If we calculated a new confidence interval, but the sample size was 9 times as small, but everything else was the same, then what would the new confidence interval be? 5. ...
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- Fall '09