February 23, 2017

Homework Help: business statistics

Posted by Candy on Thursday, July 30, 2009 at 3:15pm.

The average length of a flight by regional airlines in the United States has been reported as 299 miles. If a simple random sample of 30 flights by regional airlines were to have รต̄ = 413/6 miles and s= 42.8 miles, would this tend to cast doubt on the reported average of 299 miles? Use a two-tail test and the 0.05 level of significance in arriving at your answer.

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