Question: 9) Find the sample mean and sample standard deviation for the following data. According to Chebychev's Rule at least what percentage of the data should

9) Find the sample mean and sample standard deviation for the following data. According to Chebychev's Rule at least what percentage of the data should fall within two standard deviation of the mean? Within three standard deviations? What is the actual percentage of data that falls within two and within three standard deviation of the mean? 15 12 15 18 19 14 17 15 22 13

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