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Posted by on Sunday, October 14, 2012 at 11:50pm.

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.

  • Elementary Statistics - , Sunday, January 27, 2013 at 9:50am

    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?

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