Suppose that 12.5% of horses live over 23.4 years, while 88 8/9% live less than 25.2 years. What are the mean and standard deviation for the life expectancy of horses? Which is the correct answer? mean = 20.14; standard deviation = 4.86 mean = 21.6 ; standard deviation = 1.8 mean = 22.69; standard deviation = 4.97 mean = 23.83; standard deviation = 0.22

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