In the first two months of a recent year, 94 car occupants were killed by air bags and 61of them were “improperly belted” Estimate at the 99% level, t

In the first two months of a recent year, 94 car occupants were killed by air bags and 61of them were “improperly belted” Estimate at the 99% level, the percentage of all car occupants who were killed by air bags while being improperly belted.