A random sample of 110 lightning flashes in a certainregion resulted in a sample average
Chapter 7, Problem 12(choose chapter or problem)
A random sample of 110 lightning flashes in a certainregion resulted in a sample average radar echo durationof .81 sec and a sample standard deviation of .34 sec(Lightning Strikes to an Airplane in a Thunderstorm, J. ofAircraft, 1984: 607611). Calculate a 99% (two-sided) confidenceinterval for the true average echo duration m, andinterpret the resulting interval.
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