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The life span at birth of humans has a mean of 85.53 years and a standard deviation of 16.4 years. Calculate the upper and lower

The life span at birth of humans has a mean of 85.53 years and a standard deviation of 16.4 years. Calculate the upper and lower bounds of an interval containing 95% of the sample mean life spans at birth based on samples of 100 people. Give your answers to 2 decimal places.

a)Upper bound =years

b)Lower bound =years

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