Asked by KAOS
Compare the 95% and 99% confidence intervals for the hours of sleep a student gets. Explain the difference between these intervals and why this difference occurs.
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Anonymous
A random sample of 50 movie patrons results in an mean IQ score of 103.0. Assuming that the population standard deviation is known to be 15, construct a 95% confidence interval estimate of the mean IQ score of all movie patrons.
Can we safely say the movie patrons have a mean IQ greater than 100?
Can we safely say the movie patrons have a mean IQ greater than 100?
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