<PRE><B>Question 480777</B>
You are given the sample mean and the sample standard deviation. Use this information to construct the 90% and 95% confidence intervals for the population mean. Which interval is wider?
Answer: The 90% is smaller than the 95%
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If convenient, use technology to construct the confidence intervals. 
A random sample of 40 eight-ounce servings of different juice drinks has a mean of 99.1 calories and a standard deviation of 48.5 calories.
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The 90% confidence interval is (86.2,112.0). (round to one decimal place as needed.)
The 95% confidence interval is (83.6,114.6)
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Cheers,
Stan H.
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