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A study conducted by an airline showed that a random sample of 120 of its passengers...

A study conducted by an airline showed that a random sample of 120 of its passengers disembarking at Kennedy airport on flights from Europe took on average 24.15 minutes with a standard deviation of 3.29 minutes to claim their luggage and get through customs.

a)What can they assert with 95% confidence about the maximum error, if they use = 24.15 minutes as an estimate of the true average time if takes one of the passengers disembarking at Kennedy on a flight from Europe to claim their luggage and get through customs?

b)Redo for 99%

c)Construct a confidence interval for the true average time it takes to claim luggage, using

a.95% confidence b.98% confidence c.99% confidence d.99.9% confidence

Math   Statistics-And-Probability   
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