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October 24, 2014

Homework Help: math 200 statistics

Posted by leslie on Friday, July 11, 2014 at 10:44pm.

ADHD a researcher studying ADHD among teenagers obtains a simple random sample of 100 teenagers aged 13 to 17 and asks them whether or not they have ever been prescribed medication for ADHD. To say that the distribution of sample proportion (P cap), the sample proportion of teenagers who respond no, is approximately normal, how many more teenagers aged 13 to 17 does the researcher need to sample if
(a) 90% of all teenagers aged 13 to 17 have never been prescribed medication for ADHD?
ē(b) 95% of all teenagers aged 13 to 17 have never been prescribed medication for ADHD?

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