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The ages of commercial aircraft are normally distributed with a mean of 13.013.0 years and a...

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Basic Math

The ages of commercial aircraft are normally distributed with amean of 13.013.0 years and a standard deviation of 8.11428.1142years. What percentage of individual aircraft have ages between1010 years and 1616 ​years? Assume that a random sample of 8181aircraft is selected and the mean age of the sample is computed.What percentage of sample means have ages between 1010 years and1616 ​years?

Answer & Explanation Solved by verified expert
4.2 Ratings (610 Votes)
Let X be the age of commercial aircraftX follows normal distribution with mean 13 years andstandard deviation 81142yearsaWe have to find percentage of individual aircraft have ages x between 10 years and 16 yearsie    See Answer
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