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# Assume that the standard deviation of college student IQ's is 10

Question # 00012620
Subject: Mathematics
Due on: 05/12/2014
Posted On: 04/17/2014 09:33 PM

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1. Assume that the standard deviation of college student IQ's is 10. A random sample of 100 students from a college showed an average IQ of 110. Compute a 95% confidence interval for the mean IQ of students attending this college. 2. In the Idaho State Home for Runaway Girls, 25 residents were polled as to what age they ran away from home. The sample mean was 16 year old and the sample deviation was 1.9 years. Compute a 95% confidence interval for the mean age at which runaway girls leave home in Idaho. 3. The nicotine content of five cigarettes of a brand measured in milligrams are 21,19,23,19,24. Compute a 0.99 confidence interval for the average nicotine content of the brand.
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#### Assume that the standard deviation of college student IQ's is 10

Tutorial # 00012172
Posted On: 04/17/2014 09:34 PM
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vikas
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Tutorial Preview …10Assume xxxx the xxxxxxxx…
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Maths_-_Computation_of_Confidence_Interval.docx (17.08 KB)
Preview: Compute x 95% xxxxxxxxxx interval for xxx mean IQ xx students xxxxxxxxx xxxx college x In the xxxxx State Home xxx Runaway xxxxxx xx residents xxxx polled as xx what age xxxx ran xxxx xxxx home xxx sample mean xxx 16 year xxx and xxx xxxxxx deviation xxx 1 9 xxxxx Compute a xxx confidence xxxxxxxx xxx the xxxx age at xxxxx runaway girls xxxxx home xx xxxxx 3 xxx nicotine content xx five cigarettes xx a xxxxx xxxxxxxx in xxxxxxxxxx are 21,19,23,19,24 xxxxxxx a 0 xx confidence xxxxxxxx.....
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