Question: Ages of motorcyclist killed in crashes: A study of the ages of motorcyclist killed in crashes involves the random selection of a 150 drivers with a mean of 37.1 years based on data from the highway safety. Assuming that \(\sigma \) =12.0 years. Construct a 99% confidence interval estimate of the mean age of all motorcyclist killed in crashes. If the confidence interval limits do not include ages below 20 years, does it mean that motorcyclist rarely die in crashes?