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The mean number of carats for 308 diamonds in a sample data set is 0.6309091 carats, with a standard deviation of 0.277183 carats. Use the

The mean number of carats for 308 diamonds in a sample data set is 0.6309091 carats, with a standard deviation of 0.277183 carats. Use the mean and standard deviation to form an interval that will contain at least 75% of the carat values in the data set.

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