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Confidence interval for the true mean wing span

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Different types of bees are very similar in appearance. Statistical analysis of certain measurements, like wing span, can be used to distinguish one kind of bee from another. The wing span for honeybees is approximately normally distributed. A random sample of 10 bees is taken from a hive and the wing spans are recorded.  

What formula should be used to calculate the 90% confidence interval for the true mean wing span of honeybees.

Reference no: EM132080951

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