Asked by carol

A sample of fifteen 2-liter bottles of a soft drink delivers a mean weight of 2009 milliliters with a sample standard deviation of 11 milliliters. The quality assurance department wants to determine if there is a true fill problem, so they determine the confidence interval at 95% confidence to be ________.
Answered by PsyDAG
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion/probability (±.025) and its Z score. Insert Z score and other data into equation below.

95% = mean ± Z(SD)
Answered by PsyDAG
Indicate your <I>specific</I> subject in the "School Subject" box, so those with expertise in the area will respond to the question. (You lucked out.)
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