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QUESTION
The time it takes broken bones of a give size and type of break to heal is normally distributed.
The time it takes broken bones of a give size and type of break to heal is normally distributed. A random sample of 17 simple arm breaks occurring in victims in their twenties took an average of 53 days to heal, with a standard deviation of 5 days. Use these data to find a 99% confidence interval for the actual healing time required for all broken bones of this type.
