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The length of pregnancy for the Asian elephant has an approximately normal distribution with an average length of 609 days and standard deviation of 31 days 10 How long do the longest 5 of all elephant pregnancies last 11 What percent of the elephant pregnancies last between 600 and 615 days 12 The shortest 20 of all elephant pregnancies last fewer than how many days 13 The middle 50 of all elephant pregnancies fall between how many days
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