Question: Based on FM estimates the average age of the eets of the 10 largest US. commercial passenger carriers is 13.4 years with a standard deviation

Based on FM estimates the average age of the eets of

Based on FM estimates the average age of the eets of the 10 largest US. commercial passenger carriers is 13.4 years with a standard deviation of 1.? years. Suppose that 40 airplanes were randomly selected from the fleets of these I I] carriers and were inspected for cracks in these airplanes that are considered too large for ying. What is the probability that the average age of these 4D airplanes is at least 14 years old? Round your answer to 4 decimal places. Remember to round your zvalue to two decimal places. 00.0129 002554 003539 00.4?31 0 None of the above

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